Which of the following is a primary function of plumbing systems?

Plumbing systems serve essential functions primarily related to the management of water. Their main role involves providing a reliable supply of fresh water for various uses, including drinking, cooking, bathing, and cleaning. Additionally, plumbing systems are responsible for the effective removal of wastewater from buildings, ensuring proper sanitation and preventing the proliferation of harmful pathogens. This dual function of supplying and draining water is fundamental to maintaining health and hygiene in residential and commercial environments.

While heating and cooling, electrical distribution, and fire suppression systems play crucial roles in building functionality and safety, they do not fall under the purview of plumbing. Heating and cooling systems are concerned with temperature regulation, electrical distribution focuses on power supply, and fire suppression systems are designed for safety measures against fires. Thus, the primary functions of plumbing systems distinctly involve water supply and waste removal, making that the correct choice.