The correct answer is B because a work package leader is responsible for managing the assigned work package and optimizing the use of resources within that area of responsibility. A work package is a defined portion of project work for which cost, duration, resources, and delivery responsibilities can be estimated and managed. The work package leader coordinates the people, activities, materials, tools, dependencies, and progress needed to complete that package in accordance with the project plan. This role supports the project manager by ensuring that delegated work is executed effectively, reported accurately, and controlled against scope, schedule, cost, and quality expectations. Option A is not the best answer because validation of project deliverables and outcomes normally involves the customer, sponsor, project manager, acceptance authority, or governance body, depending on the acceptance process. Option C is also incorrect because setting the cultural and ethical tone belongs to senior leadership, project governance, sponsor, and project board responsibilities, not to a work package leader as a primary role. PMBOK defines a work package as work at the lowest level of the WBS for which cost and duration are estimated and managed, supporting this answer.
Reference topics: work package leader, resource management, work package control, delegated authority, project organization.

The correct answer is C . The suggestion to reject representatives from each company and outsource the project board function is not aligned with the ISO 21502 governance logic. In a joint project involving multiple organizations, the project board can include representatives from each participating company. This supports transparency, balanced decision-making, accountability, stakeholder confidence, and alignment among the organizations contributing resources, authority, funding, expertise, or acceptance responsibilities.
A joint project has multiple organizational interests, so excluding some companies from the project board could reduce trust and create weak governance. Option A is incorrect because ISO 21502 does not require outsourcing the project board to avoid conflicts of interest. Outsourcing governance could actually create accountability ambiguity unless carefully justified and authorized. Option B is also incorrect because selecting only one company's representatives would not necessarily reflect the shared nature of the project. In joint governance, the board should be structured to represent the participating organizations appropriately while maintaining clear authority, decision rules, escalation paths, and conflict-resolution mechanisms. The uploaded source question explicitly presents this situation as a joint project governance issue.
Reference topics: joint project governance, project board composition, representation, transparency, conflict of interest, governance accountability.

The correct answer is C. Both A and B . A project plan should include, among other elements, the project scope, risks, assumptions, and constraints. The project plan is the integrated reference document that describes how the project will be executed, monitored, controlled, and closed. Scope defines what the project is expected to deliver and the boundaries of the work. Risks identify uncertain events or conditions that could affect project objectives. Assumptions describe factors considered true for planning purposes, even though they may later require validation. Constraints define limiting conditions, such as fixed deadlines, budget ceilings, regulatory obligations, resource limits, contractual requirements, or technology restrictions. These elements are interconnected: assumptions and constraints influence scope, risk exposure, schedule, cost, quality, and resource planning. A project plan that includes only scope and risks would omit the planning logic behind them. A plan that includes only assumptions and constraints would not adequately define the deliverables or uncertainty profile. Therefore, both sets of information are necessary for sound integrated project management.
Reference topics: project plan, scope, risks, assumptions, constraints, integrated planning.

The correct answer is B. Reintroducing a familiar practice . Adaptive change refers to a comparatively low- complexity form of change where people are asked to return to, adjust, or apply something already familiar. It usually does not require a major shift in culture, mindset, technology, or organizational identity. Because the practice is already known, resistance may be lower than with more innovative or transformational changes, although communication, reinforcement, and stakeholder engagement are still required. Option A, introducing a practice new to the practitioners, is more disruptive because the affected people have no direct familiarity with the practice. Option C, introducing a practice that is new to the organization but not the industry, is closer to an innovative or transitional change because the organization must adopt something externally established but internally unfamiliar. Adaptive change is therefore associated with reintroducing or adjusting known practices rather than creating a radically new way of working. In project management, understanding the type of change helps determine communication, training, stakeholder engagement, transition support, and resistance-management needs. The uploaded source lists this question under the ISO 21502 question set and provides these three alternatives.
Reference topics: adaptive change, organizational change, stakeholder readiness, transition management, change complexity.

The correct answer is A . The purpose of controlling a project is to monitor and measure performance against the project plan. Control is the management practice that compares actual progress with planned performance, identifies deviations, evaluates their causes and consequences, and supports corrective or preventive action. It applies across scope, schedule, cost, quality, resources, risks, issues, changes, communications, and stakeholder engagement. Option B is incorrect because project control does not mean preventing all scope change. Change may be legitimate when it is justified, assessed, approved, and reflected in the appropriate project documentation. The purpose is controlled change, not absolute immobility. Option C is also incorrect because authorizing the initiation of each stage is a governance or stage-gate decision, not the core purpose of project control. In practice, controlling a project provides decision-makers with reliable information about whether the project remains on track and whether intervention is required. PMBOK similarly defines monitoring and controlling project work as tracking, reviewing, and reporting overall progress to meet performance objectives defined in the project management plan. The source question set gives performance monitoring against the plan as the correct control purpose.
Reference topics: project control, performance measurement, project plan, monitoring, corrective action, integrated project control.