TOPIC: Inputs for Project management plan?

Hi
Can any one explain why Choice 3 is more significant than Choice 1 below?


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Question: A project management plan should be realistic so that it can be used to manage a project successfully. Which of the following is the BEST method to prepare a realistic project management plan?

Choice 1. Project manager creates the project management plan based on inputs from the sponsor and the functional manager.

Choice 2. Sponsor creates the project management plan based on inputs from the project manager and the functional manager.

Choice 3. Project manager creates the project management plan based on inputs from the team.

Choice 4. Sponsor creates the project management plan based on inputs from all the stakeholders.

Correct Choice: 3

Justification

The project management plan is prepared by the project manager based on the inputs from the team and all the appropriate stakeholders.

Reference: PMstudy.com comments
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Puneet,

The work is best understood by the people who actually do the work. The project plan will be more realistic if the PM works with the project team to both define the effort as well as estimate that effort. This will yield a more realistic plan than if only the functional manager is involved.

Having in the past been committed to work defined and estimated by my manager, I can personally attest to this fact!

Regards,

Tracy

#3 is key as the inputs actually are obtained by the "butts in seats " people that perform the work.