How many appendages do insects have to detect sound?
ears Three None legs 12 six Two One
A B C D E F G H
Insects have 2 antennae.
Insects have 2 appendages to detect sound. 
How many appendages do insects have to detect sound? (A) ears (B) Three (C) None (D) legs (E) 12 (F) six (G) Two (H) One