Which of the Following Scenarios Illustrates the Physiological Response of Acclimatization

Multiple Choice

Which of the following scenarios illustrates the physiological response of acclimatization?

A) Genetic changes have occurred in populations that have lived high in the Alps for many generations that allow individuals in these populations to cope with an environment with low oxygen.
B) Desert-dwelling plants such as the cactus have developed long root systems to ensure that they get enough water.
C) A dog sheds its thick winter fur for a lighter coat of fur when the temperature warms in the spring and summer.