Which statement best describes functions of skin?

The statement that best describes the functions of skin is that it provides sensory information and regulates temperature. The skin serves multiple vital roles in the body, making it an essential organ. One of its primary functions is to act as a sensory organ, containing various receptors that detect touch, pressure, pain, and temperature. This sensory information is crucial for protecting the body from harm and enabling interaction with the environment.

Additionally, the skin plays a critical role in thermoregulation. It helps maintain the body's temperature through processes like sweating and blood vessel dilation or constriction. When the body temperature rises, sweat glands produce sweat that evaporates off the skin, which cools the body down. Conversely, when it’s cold, blood vessels in the skin can constrict to retain heat.

The other options do not encompass the full range of skin functions. While skin does act as a barrier and is involved in certain hormonal activities, it is not limited to just those functions. The skin's complexity and multifaceted roles make option B the most accurate description of its functions.