Question

which of the following is an advantage of using coal for energy? it has lots of impurities. it releases lots of useful heat. it produces lots of ash. it releases lots of pollution.

Explanation:

Coal is a fossil fuel. When burned, it releases a significant amount of heat energy which can be used for various purposes like electricity generation. Having lots of impurities, producing lots of ash, and releasing lots of pollution are all disadvantages of using coal.

Answer:

It releases lots of useful heat.