Answer:
The correct answer is B. Main Point. Hope this helps! (Sorry I'm late haha)
A hazard is a danger or risk.
Example:
The left out chemicals were a hazard, even to the detective who was wearing a mask.
a comprehensive description and explanation of an idea or theory.
"the exposition and defense of his ethics"
synonyms: explanation, description, elucidation, explication, interpretation, illustration; More
2.
a large public exhibition of art or trade goods.
synonyms: exhibition, fair, trade fair, display, show, presentation, demonstration; More
The answers is
unimportant
unsupported
One of the two I say unsupporting but the context and the thesaurus doesn't really explain so i say go with either one.