The correct answer is D. using syntax.
A substance used, or acted on, by another process or substance such as a reactant in an enzyme catalysed reaction.
Answer:simply an uncontrolled fire that is wiping out large fields and areas of land.
Explanation:It is typically fires that started out of a lightning strike, or people carelessly starting it, or accidentally, or even arson, that went un-noticed and got out of hand.