B - because it the answer that involves collaboration. Also, involvement allows progressive elaboration.

When a project is delayed due to a customer’s inability to provide critical information, the project manager should take proactive measures to minimize the impact of the delay. One of the most effective ways to do this is to involve the customer in the deployment process 1. This will help ensure that the customer is aware of the importance of providing the necessary information and is committed to doing so in a timely manner. Obtaining all critical information ahead of time (option A) is not always feasible, especially if the information is not yet available or if it is subject to change.

collaboration with customer

According to the PMBOK Guide, the correct answer that aligns with PMI's recommended practices is A. Obtained all critical information ahead of time. Option B is not correct because involvement of the the customer is too late.....

A, because Client already put you down from the priority list, useless to get more touch base with them since they may need time to general data as well or jump into other staff, should make more effort from the team itself which is do more planning/get more data ahead.

A. Obtained all critical information ahead of time

A. Obtaining information as early as possible

have done is the question , so Option A

The given answer is absolutely correct. Not all critical information will be obtained in the early stages of the project. New and emerging variables will come during execution that will also be critical to the project and they won't be obtained in the early stages. So the best to do is to involve the customer in the process from the onset. This makes the customer part of the process and sure costumer buy-in throughout. B is the correct answer as it's impractical to obtain all critical information ahead of time.

This question has to be done with Stakeholder Engagement. If the client had been properly engaged, he would have collaborated (either during deployment or ahead of deployment). Answer A doesn't ensure the critical information will be provided ahead of time. And what if the critical information is only available during deployment (kind of realtime information)?

B is the answer, if the customer were involved, they would have been aware that the critical data is important and provided it from earlier stages of deployment.

The involvement of customers is more crucial during the planning and requirements gathering stages, where their input and feedback are essential in shaping the project scope, objectives, and deliverables. During the deployment phase, the project manager should ensure that the team has all the necessary information from the customer gathered during the earlier stages, so the deployment can proceed smoothly. While customer involvement is crucial in the early stages of the project, it is not advisable to directly involve them in the technical execution of the deployment phase. The project team should be well-prepared with the gathered information to efficiently execute the deployment.

A. Obtained all critical information ahead of time. By proactively obtaining all critical information from the customer ahead of time, the project manager ensures that the necessary data and requirements are available before the deployment phase starts. This approach allows the team to plan and prepare adequately, reducing the risk of delays due to missing information.

A- always plan ahead.

In accordance with PMI standards, proactive planning and early engagement with stakeholders are vital to project success. This would involve identifying all critical information and dependencies, and ensuring these are provided well in advance of when they are required.

Why can’t A and B both be correct though? Sorry I’m just venturing into project management

B, stakeholder should be involved if they are responsible or accountable for their part of deployment phase.