Which of the following statements best describes an activity in a project?

A.
It is a defined set of functions a resource must complete for the project scope to be considered
complete.

B.
It is the effort needed to complete a work package.

C.
It is the unit of resource utilization needed to complete a project deliverable.

D.
It is a listing of all project work that must be accomplished for the project scope to be
considered complete.

Explanation:
An activity is the effort needed to complete a work package. The activities are linked to the work
packages in the WBS. An activity is the element of work performed throughout the various stages
of a project. It is a group of people, communications, processes, and work items that correspond
to a joint effort to achieve a goal. An activity is a way to manage the work collectively with others in
any organization. The create WBS process identifies the deliverables at the lowest level in the
WBS, called the work package. Project work packages are divided into smaller elements known as
activities, which correspond to the work required to complete the work package.
Answer option D is incorrect. This is a definition of all the work that the project team and manager
must complete in order to complete the total activity list.
Answer options A and C are incorrect. These are not valid definitions of an activity.