What did Darwin conclude from the observation that there are no rabbits in South America?
A. Rabbits were originally found in South America but went extinct.
B. Rabbits cannot live in South America because they do not have a good food source.
C. Rabbits cannot live in South America because it is too warm.
D. Rabbits in South America evolved into guinea pigs and thus are no longer present.
E. Rabbits evolved somewhere else and had no means of reaching South America.
Answer: E
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