Question

a mother sprints across the yard to grab her small child before he enters the street. the mother is using her a. type i a slow - twitch muscle fibers that provided her with a fast burst of movement b. type ii b fast - twitch muscle fibers that respond quickly and provide her with speed and strength c. type i b intermediate - twitch muscle fibers that respond quickly because they are delivered energy aerobically d. type ii a fast - twitch muscle fibers that act rapidly because they are delivered energy anaerobically please select the best answer from the choices provided. a b c d

Explanation:

Type II B fast - twitch muscle fibers are known for their quick response and ability to provide speed and strength, which are needed for a short - burst activity like sprinting. Type I A are slow - twitch fibers, type I B is not a standard classification, and type II A fibers are not the most appropriate for this quick, high - intensity sprint.

Answer:

B. type II B fast - twitch muscle fibers that respond quickly and provide her with speed and strength