Fact 1: Some insects can use their antennae to detect sound.

Fact 2: Aphids are soft-bodied insects with relatively long legs and antennae.

Given the two facts above, answer the question "What do aphids use to detect sound?" with the following options: 
- antennae
 - electricity
 - sonar
 - Energy
 - waves
 - lmestone
 - ears
 - whiskers


 

 antennae        