One person, alone in a house, dismisses its creaking sounds and experiences no stress; someone else suspects an intruder and becomes alarmed. these different reactions illustrate the importance of
a. the fight-or-flight response.
b. the general adaptation syndrome.
c. stress appraisal.
d. the faith factor.

C. stress appraisal.

Explanation:

Stress appraisal: The term stress appraisal refers to the process of a person evaluating, dealing or coping with any sort of stressful event or information. Since every person is different in one or either way, their way of dealing or coping with stress or stressful events also varies.

Type of appraisal:

1. Primary appraisal: The initial phase of the stress when a threat has just been encountered.

2. Secondary appraisal: After encountering the threat, a person tries to search for strategies and resources through which a person can deal or cope with the stressful event.

In the question above, The different reactions illustrate the importance of stress appraisal.

answer; biological;