According to the statement, extension, and elaboration method, which sentence is an elaboration

If your choices are the following:
A.Spring is the time of nature’s renewal after a long winter. 

B.Plants and animals bring forth new life on every continent. 

C.Trees bloom with spring buds, and migrating birds return home from winter feeding grounds

According to the Statement, Extension, and Elaboration method, the sentence is an elaboration a. Spring is the time of nature s renewal after a long winter.