Which Is an Example of Acclimatization

Multiple Choice

Which is an example of acclimatization?

A) An organism changes the lipid composition of its cell membranes to optimize membrane fluidity at different environmental temperatures.
B) A fish expresses enzymes with similar temperature optima to catalyze the same reactions in summer and winter.
C) A mammal's hair gradually turns gray as it ages.
D) Humans gradually adapt to increases in altitude by decreasing red blood cells.
E) Humans quickly close a wound caused by an accidental amputation rather than regenerating the lost part.