<prompt> Compared to an unacclimatized person, one who is acclimatized to cold has:Higher metabolic rate in the cold, to produce more heatLower metabolic rate in the cold, to conserve metabolic energyLower peripheral blood flow in the cold, to retain heatVarious combinations of the above, depending on the environment that produced acclimatization.  <response>: Ans. D. Various combinations of the above, depending on the environment that produced acclimatization. Acclimatization to cold produces several different and contrasting sets of changes, depending on the acclimatizing environment and, perhaps, on characteristics of the population being acclimatized. 