__________ is defined as the physiological and psychological response to a condition that threatens or challenges an individual and requires some form of adaptation.

A) Fatigue
B) Stress
C) Emotion
D) Distress

Physiological Response

The body's automatic reactions that occur in response to a stimulus or change in the environment.

Psychological Response

An individual's behavioral or mental reaction induced by psychological or emotional factors, often a response to an external event or internal thought process.

Adaptation

The process by which organisms adjust to changes in their environment in order to survive and reproduce.