Read the sentence below and answer the question that follows. Animals will either adapt to climatic changes or become extinct. The Parus major is now laying eggs approximately two weeks earlier than it did 50 years ago.

Which of the following most likely led the Parus major to change its behavior?

A)

It is making the most of the availability of seasonal food.

B)

It is using leaves and other vegetation that is now sprouting earlier.

C)

It is arriving from migration earlier due to warmer weather.

D)

Its individual adaptability from year to year has been studied.

E)

Its nests need the camouflage offered by trees with leaves.