3. Interval training

A. will get you into shape in about five days.
B. involves long periods of low-intensity activity and builds stamina.
C. can guarantee an athlete an injury-free season.
D. involves short periods of intense activity and is used to build strength, speed, and power

Respuesta :

By my mom she said it is D and please follow me
yes... it is d. I think it is the best answer