One contributing factor to stress reactions is the physical factor. Which option is associated with this factor?

One contributing factor to stress reactions is the physical factor. Which option is associated with this factor?

• A. Sleep deprivation
• B. Worries about others
• C. Noise exposure
• D. Hunger or thirst

Answer: (B)

Physical factors are bodily or environmental conditions that directly increase arousal and stress. Sleep deprivation is the clearest example of a physical factor because lack of sleep creates a tangible state of fatigue and heightened physiological stress—the body’s stress systems become more reactive, attention and emotion regulation decline, and irritability or anxiety can rise. Worries about others are psychological and can drive stress through thoughts and emotions, not through a bodily state. Noise exposure and hunger or thirst are also physical, but sleep deprivation most directly illustrates how a physical condition amplifies stress responses.