The resource calendar is needed because it will help Wendy and the project team to determine

when the project team resources will be available. The availability of the project resources can affect

the overall duration of the project.

A resource calendar is used to make sure that work resources (people and equipment) are scheduled

only when they are available for work.

They affect a specific resource or category of resources. By default, the working time settings in the

resource calendar are the same as in the

project calendar. However, a user can customize the resource calendar to show individual schedule

information, such as vacations, leaves of

absence, or equipment maintenance time.

Answer option B is incorrect. The project scope statement is an input to the estimate activity

duration estimate, but it is not the best choice for this question.

Answer option C is incorrect. The project communications management plan is not an input to the

estimate activity duration process.

Answer option A is incorrect. The project charter is not an input to the estimate activity duration

process.