Skeletal System question

I am having hard time figuring out why any of these would be the right answer. Any help would be greatly appreciated!

REVIEW

Which of the following is not an important function of the skeletal system?

A. Provides a framework for the body

B. Assists in movement

C. Protects vital organs

D. Manufactures blood cells

My guess is B. Because muscles are more involved in that.

yeah, it's b. granted that if you had no bones you'd be a pretty immovable puddle, but the other three functions are active functions that bones accomplish themselves, and "assists" is a weaker verb. and even if you are paralyzed, you still need your bones to do the rest of those things.

It's B, muscles assist more in movement than the skeletal system.

Blood cells are manufactured in the bone marrow. Pretty important function of the skeletal system.