Symmetrical wings are attractive to females. Symmetrical wings indicate genetic mutations. Symmetrical wings indicate that males are good predators. Symmetrical wings are signs that a bird is very aggressive.
I am hesitating between 4 options to answer the following question, which option should I choose?
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?
Possibilities:
- Symmetrical wings are attractive to females.
- Symmetrical wings indicate genetic mutations.
- Symmetrical wings indicate that males are good predators.
- Symmetrical wings are signs that a bird is very aggressive.

Symmetrical wings are attractive to females.