b. depressants.
c. stimulants
b. Skeletal muscles are controlled by the central nervous system.
c. Skeletal muscles are used to move large body parts.
d. Skeletal muscles are attached to the bones.
the answer is
A.
Skeletal muscles control involuntary body functions.
hope this helps
(B)Smoking relaxes people because it lowers the heart rate.
(C)Smoking can lead to emphysema as well as strokes.