Question

Three sound waves from the same source travel toward you across an open field. The three waves have high, medium, and low amplitudes. Which sound reaches you first?

A. The high-amplitude wave
B. The medium-amplitude wave
C. The low-amplitude wave
D. All three reach you at the same time.

Answer 1

D. Amplitude has no effect on velocity. 
This question might have been to confuse you with the doppler effect which states that wavelengths become longer if the object causing the waves is moving away from the observer.