Vestigial organs are __________.

• A. evidence for Lamarck's theory of use and disuse
• B. one piece of evidence that does not support the theory of evolution
• C. examples of anatomical imperfections such as the human knee
• D. homologies that can only be observed in embryos
• E. remnants of structures that were useful to an organism's ancestors but that are now nonfunctional or show reduced function

Answer: (E)