Final answer:
The correct option is (a) Water, electrical, and heating. The term 'distribution systems' in warranty coverage includes water, electrical, and heating systems, which represent essential infrastructure for maintaining residential and commercial services.
Step-by-step explanation:
For warranty coverage, the term "distribution systems" traditionally covers the infrastructure and facilities required to deliver services and products necessary for the daily functioning of society and the economy. In the context given, the term "distribution systems" would likely include the following three systems:
- Water Distribution Systems
- Electrical Distribution Systems
- Heating Systems
These systems represent the basic support necessary to maintain homes and businesses. Specifically, they include the network of pipelines for water delivery to residences and commercial buildings, the transmission along power lines from electrical power plants, and the infrastructure for distributing heat, possibly referring to centralized heating systems or other heating networks.