Final answer:
Of the choices given, 'absorbing mineral reserves, water, and waste' is not a function of the skin; rather, the skin protects against microorganisms, regulates body temperature through sweat, acts as a sensory organ, and aids in vitamin D synthesis.
Step-by-step explanation:
The function of human skin that is not part of its role is 'A. absorbing mineral reserves, water, and waste.' The primary functions of the skin include protecting the body from microorganisms, chemicals, and other environmental factors; preventing dehydration; acting as a sensory organ by gathering information about heat, pressure, cold, and pain; regulating body temperature through sweat production; and synthesizing vitamin D with exposure to UV light. Moreover, melanin in the skin acts as a sun block by blocking UV light to protect the deeper layers.
The dermis has its own set of functions, including regulating body temperature, enabling the sense of touch, and helping with the elimination of waste through perspiration. The skin does not, in normal functions, absorb minerals, water, or waste into the body. These substances are typically absorbed in the digestive system, or in the case of water, also through various epithelial cells, but not through the skin.