Many male songbirds are brightly colored. However, the color of the birds is usually determined by a balance of
A. sexual selection that reduces bright colors and natural selection in favor of bright colors.
B. natural selection against bright colors due to predation and mutations that introduce bright colors.
C. mutations that reduce bright colors and gene flow in favor of bright colors.
D. natural selection against bright colors due to predation and sexual selection in favor of bright colors.
E. mutations that reduce bright colors and sexual selection in favor of bright colors.
Answer: D
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