Which functions do the skeletal system and muscular system have in common?

support and movement of the body.

Explanation:

The two systems work in a coordinated fashion to provide support and movements. While the skeleton provide the bony framework  for support,  and attachment surface or platform, the muscles are attached to the bones of the skeleton through this surfaces or platform, and the contractions produces by the muscles gives movements to the body parts.

E,g the biceps muscles of the upper arm is attached to the humerus bone of the upper arm to provides movements of the upper arm in mammals when this muscle contracts.

The musculosketal system formed in this manner provides shape, stability and locomotion to the body.

They both are organ systems

Explanation:

They are a part of keeping homeostasis together and balanced. And their functions are to provide structure and body movement.

i think the answer is

mass

it is either c or d and i know for sure it is not a or b