Answer:
James-Lange
Step-by-step explanation:
James-Lange theory: In psychology, the term "James-Lange theory" is referred to as a theory of emotion which was introduced by a physiologist named Carl Lange and a psychologist named William James. This theory suggests that an individual experience emotion as a result of certain physiological reactions to particular events. It signifies that seeing an "external stimulus" can lead to a "physiological reaction".
In the question above, the given statement represents the "James-Lange theory of emotion".