According to the PMBOK Guide, the project manager should use interpersonal and team skills to manage the team and resolve conflicts. One of these skills is conflict management, which involves identifying and addressing the root causes of disagreements among team members. In this case, the project manager should try to understand why the team member is absent from the meetings and what are the possible impacts on the project and the team. The project manager should also communicate the benefits of attending the meetings and encourage the team member to participate more actively. This way, the project manager can foster a collaborative and respectful team environment and avoid potential issues such as poor communication, low morale, or missed deadlines. References: PMBOK Guide, 7th edition, pages 282-283, 287-288.

In the context of Agile methodologies, such as Scrum, which is often used in conjunction with PMP practices, the daily standup meeting serves as a platform for team members to communicate progress and identify impediments to the sprint goal. When a delay is reported, especially one that involves an external vendor, it is crucial for the project manager to facilitate a resolution that does not disrupt the team's workflow.
The project manager should gather all necessary details from the team member to understand the issue fully and then work directly with the vendor to resolve it. This approach aligns with the principles of effective communication and vendor management, ensuring that the project manager has the information needed to address the problem without overburdening the team member with responsibilities that fall outside their scope.
: The answer is supported by best practices in vendor management and communication as outlined in the PMBOK Guide and Agile methodologies, which emphasize the importance of the project manager's role in addressing issues with external vendors and maintaining the flow of the sprint. Additionally, the approach of engaging with the vendor directly is consistent with the guidance provided in the Professional in Business Analysis (PMI-PBA) reference materials, which advocate for clear communication and negotiation to resolve vendor-related issues and conflicts.

When a project sponsor requests additions to the project scope, it is essential to follow a structured change management process. Creating a change request for the CCB is a critical step in this process. The CCB will review the proposed changes, assess their impact on the project's objectives, constraints, and overall benefits, and then make an informed decision on whether to approve, reject, or request modifications to the change123.
This ensures that all changes are thoroughly evaluated and aligned with the project's goals and resources.
References:
* The PMBOKGuide outlines the role of the change control board in managing changes and ensuring that they are in line with project objectives1.
* The Professional in Business Analysis (PMI-PBA) guide emphasizes the importance of a structured process for managing change requests and the role of the CCB in this process2.
* Discussions among PMP professionals highlight the necessity of involving the CCB when a project sponsor introduces changes to ensure that the project remains on track and that all impacts are considered45.

Inviting a design team member to the next daily meeting facilitates direct communication and collaboration, which is in line with Agile principles. This approach promotes quick resolution of issues and supports the iterative nature of Agile project management, where cross-functional team collaboration is key to delivering value in each iteration1.
= The iterative project management process emphasizes the importance of collaboration and transparency to address pain points and avoid stagnation of progress1. Additionally, the issue log is a tool for tracking and managing issues, but it does not replace the need for direct communication and immediate action when possible2

Waiting until the product is nearly launched before involving customer validation is a known anti-pattern. To avoid late-stage surprises, validation should be integrated continuously throughout the lifecycle. This aligns with the Agile principle of customer collaboration and feedback loops.
According to PMBOK Guide - Seventh Edition, early and continuous engagement of stakeholders (especially customers) helps in detecting issues early. Frequent validation allows incremental improvements and reduces risk of rework at later stages.
Option A is reactive and not preventive.
Option C is helpful but not sufficient without continuous validation.
Option D focuses on internal quality but not customer-centric validation.
References:
PMBOK Guide - Seventh Edition, Stakeholder and Delivery Performance Domains Agile Practice Guide, Chapter 5: "Customer Involvement and Continuous Feedback"