Which theory/hypothesis suggests that strong emotions trigger the formation of strong memories, and weak emotional experiences form weak memories?

Arousal theory

Explanation:

Arousal theory: In psychology, the arousal theory was proposed by the famous psychologists named John Dillingham Dodson and Robert M. Yerkes in 1908.

The arousal theory is described as a phenomenon that explains an individual needs an optimum level of arousal or excitement. An individual who's high on the optimal level of arousal will display high excitement of behavior such as bungee jumping whereas those who show low optimal level of arousal will be satisfied with less risky or exciting activities.

In the question above, the given statement signifies the importance of arousal theory.