If a hiker, inadequately dressed for sub-zero temperatures, experiences prolonged exposure, which consequence directly follows from the failure of peripheral thermoregulation?

💡 Explanation

Peripheral vasoconstriction occurs as a thermoregulatory response to cold exposure because it reduces blood flow to the skin, thereby minimizing heat loss to the environment. Therefore, option B is correct; rather than accelerating glycogenolysis or increasing sweating, the body attempts to conserve heat via vasoconstriction.

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