Final answer:
The subject of this question is Engineering, and it is about reporting the type of heating systems and energy sources. The inspector needs to report this information to assess efficiency and environmental impact.
Step-by-step explanation:
The subject of this question is Engineering. Specifically, it relates to heating systems and energy sources. The question is asking about the information that the inspector should report regarding the type of heating systems and the energy sources used.
For example, when inspecting a building, the inspector may report that the heating system is a gas heater or a solar heating system. They may also report the energy sources used, such as natural gas, electricity, or solar energy. This information helps in assessing the efficiency and environmental impact of the heating systems.