Question: Male barn swallow birds with symmetrically-shaped wings find mates more quickly than males with asymmetrical wing shapes. Which statement best explains the significance of symmetry in the barn swallow population?

  Options: 
 A. Symmetrical wings are attractive to females.
 B. Symmetrical wings indicate genetic mutations.
 C. Symmetrical wings indicate that males are good predators.
 D. Symmetrical wings are signs that a bird is very aggressive.
Answer: A