Which combination has the three elements that could cause a fire? air, a piece of paper, and a lit cigarette a match, a rag, and a piece of paper an electrical wire, a cigarette, and gasoline air, wood, and gasoline

Air, a piece of paper, and a lit cigarette

Fire is the product of oxidation, a chemical reaction that uses oxygen. To create fire, you will need 3 things: oxygen, heat source and fuel to burn. Oxygen comes from the air. The piece of paper will be the burned fuel. Lit cigarette provide the heat source.

The answer is b. increased blood flow reduces nerve sensitivity