acceptance
Acceptance is a strategy for threats or opportunities and is part of a tool and technique of the Plan Risk Responses process. This strategy implies that the organization is willing to accept the consequences of the risk should it occur.

acceptance criteria
Acceptance criteria refers to the product of the project and includes the process and the criteria that will be used to determine whether the deliverables and the final product or service of the project are acceptable and satisfactory.

Achievement Theory
This motivational theory says people are motivated by the need for three things: achievement, power, and affiliation.

Acquire Project Team 
This process involves attaining human resources and assigning them to the project. Human resources may come from inside or outside the organization. Acquire the Project Team belongs to the Executing process group.

activity attributes
Activity attributes describe the characteristics of activities, such as the activity identifier or code, descriptions, constraints and assumptions associated with the activity, predecessor activities, successor activities, resource requirements, the individual responsible for completing the work, and so on. The activity attributes are an extension of the activity list and are used in the schedule model tool and technique of the Develop Schedule process.

activity duration estimates
Activity duration estimates are quantifiable estimates of the number of work periods needed to complete the schedule activities listed. They are an output of the Estimate Activity Durations process.