Which type of heat source is the cleanest? a. open fireplace b. wood stove c. hot water radiant heat

option (C)

Explanation:

The source which gives the energy in form of heat is called heat source.

There are several sources which gives us heat. For example, sun, burning candle, burning coal, heater, wooden stove, etc.

Here, the cleanest source of heat energy is hot water.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods