Which One of the Following Statements Is True

Multiple Choice

Which one of the following statements is true?

A) Organisms always evolve the characteristics they need to survive.
B) Some individuals within the population must die for natural selection to occur.
C) Darwin used molecular biology as evidence of evolution.
D) Natural selection can only work on variation that already exists.
E) Convergent evolution produces homologous structures. Natural selection can only operate on existing variation.