Final answer:
A stressor can trigger the fight-or-flight response, which prepares the body to resist or escape a threat.
Explanation:
Stressor is defined as a stimulus that can trigger the fight-or-flight response, a physiological reaction that prepares the body to resist or escape a threat. This response involves the activation of the sympathetic nervous system, increased heart rate, and the release of chemicals to help the body react quickly in perceived threatening situations.
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