Wild rabbits in Alaska have short ears, whereas those found in Arizona have long ears. For the Alaskan rabbits, this is an adaptation to which of the following?

Wild rabbits in Alaska have short ears, whereas those found in Arizona have long ears. For the Alaskan rabbits, this is an adaptation to which of the following?
A . amount of precipitation
B . meager food supplies
C . number of predators
D . parasitic fungi
E . cold temperatures

Answer: E