Bats and birds have many things in common with each other. Both bats and birds can fly . Many bats and birds hunt for similar food, like bugs. Both bats and birds take care of their young offspring. In fact, both birds and bats migrate through Florida. Why do both birds and bats migrate?
A. Cold weather makes it hard to find food.
B. They run out of space where they live.
C. Cold temperatures make it hard to grow bigger.
D. Shorter days and longer nights.

Please help.