Answer: D). Proximal end
Explanation:
The less moveable end of the skeletal muscle is the medial or proximal end. It can be found near the point of attachement of the bones called as origin. It can be observed near the midline of the body.
I'd say protein synthesizer.
Is this the question or what
A lymphatic system. I really hope this answer helps you.
This is mutualism because both species benefit