Question

Which of the following is true about fast-twitch muscle fibers?

A.
They can deliver a lot of power for a long time.

B.
They contract very quickly.

C.
They are found only in elite athletes.

D.
They only twitch when you are nervous.

Answer 1

B

Step-by-step explanation:

It's B I recently read an article on it :))

Answer 2

B

Step-by-step explanation:

because they use anerobic metabolism to ceate fuel and they are better at generating short busts of strength or speed than slow muscles