Question

Which statement(s) identifies a disadvantage of using coal as a fuel?

I. Coal can be liquefied.
II. Coal is flammable.
III. Burning coal produces greenhouse gases.

A. I only
B. II only
C. III only
D. I and II only

Answer 1

C. III only

Step-by-step explanation:

The statement that identifies a disadvantage of using coal as a fuel is III only, which is "Burning coal produces greenhouse gases."

I is incorrect because although coal can be liquefied, it is an expensive and energy-intensive process that is not widely used. II is incorrect because although coal is flammable, this is actually a property that makes it useful as a fuel. However, III is correct because burning coal releases large amounts of carbon dioxide and other greenhouse gases, contributing to climate change and air pollution.