When the quadriceps contract, what also must happen at the same time? . a. The gastrocnemius must contract.. b. The gastrocnemius must relax.. c. The hamstrings must contract.. d. The hamstrings must relax.

Respuesta :

Hello!

When the quadriceps contract his opposing muscle must relax, so, the hamstrings must relax. Letter d)

Hugs!

Answer:

The anwser is D

Explanation:

Hamstrings must relax

Otras preguntas