Question

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

Explanation:

To determine the advantage of using coal for energy, we analyze each option:

• "It produces lots of ash" is a disadvantage as ash is a waste product.
• "It has lots of impurities" is a disadvantage as impurities can affect efficiency and cause issues.
• "It releases lots of pollution" is a major disadvantage due to environmental harm.
• "It releases lots of useful heat" is an advantage because the heat can be used for energy production (e.g., in power plants to generate electricity or for heating).

Answer:

D. It releases lots of useful heat.