Garter snakes only recently invaded California and have evolved the ability to e

Question

Garter snakes only recently invaded California and have evolved the ability to eat slugs since that recent invasion. This tells us definitively that Evolution acts to expand the diets of animals to buffer the species against changes in food supply that might lead to extinction. The early slug-accepting garter snakes must have survived better on average than those that lacked this ability in the early populations in California. Every slug-accepting garter snake had higher reproductive success than all the slug-rejecting snakes generation after generation, until there were no more slug-rejecters in California. None of the above

Explanation / Answer

The correct option is (a) Evolution acts to expand the diets of animals to buffer the species against changes in food supply that might lead to extinction.

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