Final answer:
The best description of how the body moves is through the contraction of skeletal muscles, which are striated, multinucleated tissues that act on bones to produce movement and are controlled voluntarily. Therefore correct option is A
Step-by-step explanation:
The statement that BEST describes how the body moves is: A. Skeletal muscles, which are made of fibers, nerves, and blood vessels, contract in order to make the body move. Skeletal muscles are striated, multinucleated muscle tissues that require signaling from the nervous system to trigger contraction. These muscles are typically referred to as voluntary muscles, which move bones and enable body movement. Conversely, smooth muscle tissue is found in the walls of hollow organs like the intestines and stomach, and cardiac muscle tissue is exclusive to the heart.