Final answer:
The muscular system does not support the immune system.
Step-by-step explanation:
The muscular system performs various functions in the body, but one of the options listed is not a function of the muscular system. The correct answer is a. Immune system support. The muscular system is mainly responsible for movement, maintenance of posture, production of body heat, and constriction of organs and vessels. The immune system, on the other hand, is a separate system that is responsible for protecting the body against pathogens and foreign substances.