Question

1. what is the main function of the muscular system?

to help the body move
to break down food
to filter waste from the blood
to carry messages through the body

Explanation:

The muscular system's primary role is movement. Breaking down food is the digestive system, filtering waste is the excretory system, and carrying messages is the nervous system. So the correct option is the one about helping the body move.

Answer:

A. To help the body move (assuming the first option is labeled A; if not, the option "To help the body move")