Q: Which hormone is responsible for the "fight-or-flight" response?  

Answer: C

The "fight-or-flight" response is a physiological reaction that occurs in response to a perceived threat or danger. It involves the activation of the sympathetic nervous system, which triggers the release of adrenaline (epinephrine) and noradrenaline (norepinephrine) from the adrenal glands. These hormones prepare the body for a rapid response to the threat, including increased heart rate, dilation of blood vessels, and increased blood flow to the muscles. Therefore, Option (C) is the correct answer.

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