According to the PMBOK Guide, the project manager should manage the project scope, including the planning, validation, and control of the scope. The project manager should also manage the project changes, including the initiation, evaluation, approval, and implementation of the changes. In this scenario, the project manager received a request to add additional changes 1 day before the planned change date. This is a potential change to the project scope that may also impact the project time, cost, quality, and other aspects. The best course of action is to review the additional changes and perform integrated change control. This can help the project manager to assess the feasibility and desirability of the change request, and to determine the appropriate response and approval. Reviewing the additional changes and performing integrated change control (option C) is the best solution to the issue, as it demonstrates proactive and effective project scope and change management. Rejecting the changes as the lead time is too short (option A) may not be feasible or ethical, as it may violate the customer's expectations and satisfaction, and may damage the trust and relationship with the customer. Determining whether the project team is capable of making the changes (option B) may not be sufficient or realistic, as it may ignore or overlook the impact and value of the change request, and may create a conflict or resentment among the project team. Checking if the changes are covered in the statement of work (SOW) (option D) may not be relevant or helpful, as it may not address the change request itself, nor does it account for the possible deviations or changes that may occur during the project execution. References: : Project Management Institute. (2017). A Guide to the Project Management Body of Knowledge (PMBOK Guide) (6th ed.). Newtown Square, PA: Author1 : Change Request - Project Management Knowledge2 : Managing Change Requests in Project Management [Template]3 : Which Project Documents Need A Change Request For Updates?4

According to the PMBOKGuide, the project manager should analyze the stakeholder's expectations and identify the topics of interest that may affect the project's success. This will help the project manager to tailor the communication and engagement strategies to the stakeholder's needs and preferences. The project manager should also use meeting management techniques to plan and conduct effective meetings with the stakeholder, and use active listening and feedback skills to ensure mutual understanding and alignment1. References: PMBOKGuide, Sixth Edition, Chapter 13: Stakeholder Management, Section
13.2.2.4: Data Analysis, Section 13.3.2.3: Communication Skills, Section 13.3.2.4: Interpersonal and Team Skills; Meeting Management Techniques for the PMP Exam

The project manager should collaborate with the compliance team member to review and prioritize the requirement's delivery, as this is a way to manage the change request and ensure that the project meets the compliance standards and expectations. The project manager should also communicate the impact of the change on the project scope, schedule, cost, and quality to the project sponsor and other stakeholders, and obtain their approval and support. The project manager should not ask the team to include the compliance requirement in the current sprint and deliver it (choice A), as this would disrupt the sprint planning and execution, and create scope creep and quality issues. The project manager should not add the new compliance requirement to the backlog as the technical team does not have any capacity (choice B), as this would delay the delivery of the compliance requirement and expose the project to legal and regulatory risks. The project manager should not include the compliance lead in the stakeholders list and wait for the next status meeting (choice C), as this would not address the urgency and importance of the compliance requirement, and it would not involve the compliance lead in the decision-making and problem-solving process. References:
* PMBOK Guide, 6th edition, page 115: "A change request is a formal proposal to modify any document, deliverable, or baseline."
* PMBOK Guide, 6th edition, page 119: "The project manager should review all change requests, assess their impact on the project, and either approve them or submit them to the change control board (CCB) or other decision-making authority for approval or rejection."
* PMBOK Guide, 6th edition, page 120: "The project manager should communicate the approved change requests to the project team and other stakeholders, and update the project management plan and other project documents accordingly."
* PMBOK Guide, 6th edition, page 39: "Compliance requirements are the set of standards or regulations that the project must adhere to, such as health, safety, security, performance, environmental, or quality standards."

Explanation:

A cost baseline is the approved version of the projected costs for the entire project. It is fixed, and, along with other aspects of the project baseline, is used as a benchmark for the rest of the project1. A cost baseline includes the cost estimates for all the tasks on the project schedule, plus the contingency reserves for identified risks (known unknowns)2. A cost budget is the cost baseline plus the management reserves for unidentified risks (unknown unknowns)2. Therefore, before determining the cost baseline, the project manager needs to add contingency into the budget to account for inflation and other changes that may affect the project costs. This is different from looking at a previous project, requiring stakeholder approval, or revising the project timeline and scope, which are not necessary steps for creating a cost baseline. References:
* 3: What Exactly is a Cost Baseline in Project Management? | Runn
* 2: Project Cost Management: Cost Baseline vs Budget for PMP Exam