Why might female widow birds (Euplectes progne) chose males with longer tails even though there are no material benefits to long tails?
A) Long tails in males might indicate a good genetic composition (good genes hypothesis) .
B) Long tails in males might indicate good overall health of males (good health hypothesis) .
C) Both a and b are possible.
D) Neither a nor b is possible.
Correct Answer:
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