Fight-or-flight reactions cause activation of :

1. A. the parathyroid glands, leading to increased metabolic rate.
2. B. the kidney, leading to suppression of renin-angiotensin-aldosterone pathway.
3. C. the adrenal medulla, leading to increased secretion of epinephrine and norepinephrine.
4. D. the pancreas leading to a reduction in the blood sugar levels.

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