The project manager is in the middle of the project, which is divided into five iterations. Each user story is worth $50, so the total budget for the project is $50 * 100 = $5000. The actual expenditure so far is $200, and
50 user stories have been delivered. This means that the project has spent less than the budgeted amount for the 50 user stories ($50 * 50 = $2500), so it is under budget. Since the project is in the middle and has delivered half of the user stories, it is on schedule.
The Project Management Professional (PMP) Certification from PMI1, PMP Examination Content Outline - June 2019 - Project Management Institute2, Professional in Business Analysis Reference Materials3.

the one that reflects the best practice of communicating project status to stakeholders, based on the earned value management (EVM) metrics and the project management plan. Reference: PMP Exam Set G - Q76 - This is a similar question with the same answer choices and a detailed explanation of why each option is correct or incorrect. It also provides a reference to the PMBOK Guide, Sixth Edition, page 267.

According to the PMBOK Guide 7th Edition, one of the principles of project management is to "focus on value". This means that the project manager should deliver products, services, or results that meet the needs and expectations of the customer and other stakeholders. One of the ways to achieve this is to use an adaptive or agile approach, which allows for frequent feedback and collaboration with the customer. Working with the product owner to define the minimum viable product(s) (MVPs) is an example of an agile technique that helps to deliver value early and often, and to validate the customer's requirements. MVPs are versions of the product that have enough features to satisfy the customer's needs and provide feedback for future development. Therefore, this option is the best approach to remove the impediment of the customer's unclear requirements. The other options are not as effective because they do not address the root cause of the problem, which is the lack of customer involvement and validation. Following a predictive approach may lead to delivering a product that does not meet the customer's needs or expectations, and may result in rework or waste. Reinforcing the negotiation and soft skills of the team may help to improve the communication and relationship with the customer, but it does not ensure that the product will deliver value. Developing and monitoring a plan with due dates may help to manage the schedule, but it does not guarantee that the product will satisfy the customer's requirements. References: : PMBOK Guide 7th Edition, PMI, 2021, p. 9 : Agile Practice Guide, PMI, 2017, pp. 25-26

The Project Management Plan (PMP) is the primary document that defines how the project will be executed, monitored, and controlled. It is essential for guiding the project team through the project's execution and ensuring that all stakeholders are aligned on the project's objectives and approach. When management plans and documents are missing, it is crucial to recreate these artifacts to provide direction and structure for the project. This aligns with the best practices outlined in the PMBOK guide, which emphasizes the importance of the PMP as a tool for planning, executing, and monitoring the project12.
References:
PMBOK Guide and Standards1
LinkedIn article on "18 Plans and 33 documents in PMP" by Amer Ali1
PMTI article on "What is a Project Management Plan in Project Management (PMP)"2

In a situation where a team member is struggling with a new system that was recently implemented, the project manager should assign an experienced resource to support the team member12. This approach ensures that the team member gets the necessary help to understand and adapt to the new system, thereby improving their performance and reducing the risk of project delay12. It's important to note that the project manager should approach the conversation respectfully and privately, focusing on the behavior and not the person2.
References: = How Project Managers Can Deal With Difficult Team Members, 7 Steps for Dealing with a Difficult Team Member - Project Bliss