The principle that performance increases with arousal only up to a point,beyond which performance decreases is

A) drive-reduction theory.
B) homeostasis.
C) the Yerkes-Dodson law.
D) incentives.

The Yerkes-Dodson law states that there is an optimal level of arousal for maximal performance, and that increased arousal beyond this point will lead to decreased performance. This principle has been supported by research in various domains, including sports and academic performance. Choice A refers to a different theory about motivation, choice B refers to a process of maintaining internal stability, and choice D refers to external factors that influence behavior.