Acclimatization is the process by which animals adjust to seasonal changes. Which example is least characteristic of acclimatization?

A) An endotherm entering torpor
B) A horse's coat thickening in winter
C) A fish's metabolic rate slowing
D) A bear entering hibernation
E) A lizard basking in the sun

Acclimatization refers to physiological adjustments to changes in the environment, often seasonal. While examples A through D involve physiological changes in response to seasonal variations (e.g., temperature changes), E (a lizard basking in the sun) is more indicative of an immediate behavioral response to regulate body temperature rather than a seasonal acclimatization process.