(intransitive) To decide.

A decisionmaker's conception of what will happen as the outcome of a decision.

plural of game-time decision

(sports) A decision about the conduct of a sporting event, usually one made by the coach regarding which players will start or will play, or which strategy will be employed, which is put off until the start of the game itself.

The process of economic agents aiming to maximise their objectives, by ensuring the marginal benefit of an action is equal to its marginal cost.