A．Because she has less muscle fiber for her body weight.B．Because she has less voluntary muscle than an average man.C．Because she has 60 to 70 percent less muscle for her body mass.D．Because she has only 60 to 70 percent as much muscle for as a man her body mass.
A．Because she has less muscle fiber for her body weight.
B．Because she has less voluntary muscle than an average man.
C．Because she has 60 to 70 percent less muscle for her body mass.
D．Because she has only 60 to 70 percent as much muscle for as a man her body mass.