Explanation
According to the PMBOK Guide, 7th edition, one of the key principles for project delivery is to "tailor the delivery approach based on context" (p. 11). This principle implies that the project manager should adapt the processes and practices to suit the specific needs and characteristics of the project, rather than following a rigid or predefined methodology. The project manager should review and amend the processes to ensure only value-adding activities are present, as this will help to eliminate waste, optimize efficiency, and improve performance. Reviewing the resources, updating the variation register, or updating the schedule are not effective ways to handle the situation, as they do not address the root cause of the problem, which is the misalignment between the processes and the project context. References: PMBOK Guide, 7th edition, p.
11; PMP Exam Content Outline, Domain II: Process, Task 2.