The answer is B. Because think about it, it’s not a scientific fact that brown dogs are better pets, and the best color for your room isn’t it because the answer would be an opinion of someone not a fact. I hope this might help you.
Inert means unreactive in nature or un reactive in there normal or natural state and noble gas has there outermost shell electron filled up they complete there duplet or oclet valency state that why there inert in there natural state
