Participants can choose to work in areas of management, technology, education, or development.

The participants must agree to be part of the study but cannot choose the group to which they are assigned.

However, if both participants choose to remain silent, they will be set free.

Participants can choose among the funds sold by the council's members.

Participants chose whether or not to take aspirin and when.

This allows participants to choose a plan that best meets their individual needs.

The participants choose the linguistic resources needed to complete the task.

Thus all participants have chosen to postpone making a decision.

Participants can choose to stay in residences during the course or travel from home each day.

In both games and drama a participant chooses to play.