The correct option is SYMBOL.
A symbol refers to an object or character which is used as a conventional representation of an object, process or function. Symbol is a thing which stands for another thing.
In the question given, the flag stands for United States of America.
Well, since C is the only example where a positive thing happens, then it is certainly not a potential problem, so 'they can provide a lot of energy for people to use' is the correct answer. The other examples are problematic.
The correct answer for this question should b , B.
<em><u>The six elements of the life cycle of fire are described by Dawson Powell in The Mechanics of Fire. These elements are input heat, fuel, oxygen, proportioning, mixing, and ignition </u></em><em><u>continuity</u></em>
