Multiple choice Snakes mainly respond to earth-borne sound vibrations through the quadrate bone air-borne sound vibrations through the quadrate bone earth-borne sound vibrations through squamosal bone Both (A) and (B) Reveal answer Fill a bubble to check yourself D Correct answer Explanation Snakes mainly respond to earth-borne sound vibrations through the quadrate, although they are also sensitive to low frequency air-borne sound vibrations.