Christina and her friends are discussing the theory of evolution. One friend states that there is no evidence to support the theory of evolution. Which line of evidence could Christina offer to contradict her friend's statement?

A. All animal structures have evolved to perform a specific function.

B. Fossil evidence demonstrates the major changes of most species.

C. Humans have bred dozens of dog varieties from ancestral wolves

D. Vertebrate embryos share common ancestral features such as tails

Explain.