Question

What is the best definition of “fitness” in terms of evolution?

a. The amount of lean muscle mass in an organism

b. The ability of an organism to exercise for a long period of time

c. An organism’s ability to survive to an old age

d. An organism’s ability to survive and produce fertile offspring

Answer 1

Answer:

c. An organism’s ability to survive to an old age

Explanation:

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Answer 2

I say A but leaning more so to C & D… could be out of those three but C makes a lot of sense