What is one of the functions of the integumentary system?

The integumentary system's primary role is to form the external protective layer of the body, which encompasses the skin, hair, nails, and glands. This protective barrier is crucial for several reasons. It shields internal organs from mechanical damage, pathogens, and harmful substances. Additionally, the skin plays a vital role in regulating body temperature through sweat and blood flow, and it serves as a barrier to prevent water loss. This system also contains sensory receptors that help detect changes in the environment, contributing to the body's overall homeostasis. Thus, option C accurately captures one of the integrative functions of the integumentary system.