Final answer:
The skeletal system's primary function includes protecting and supporting body tissue and internal organs.
Step-by-step explanation:
The skeletal system's primary function includes protecting and supporting body tissue and internal organs. The bones of the skeleton provide the necessary support and structure to prevent the body from being just a bag of soft tissues. Additionally, the bones also serve as a protective barrier for delicate internal organs such as the brain, spinal cord, heart, and lungs.