NFSI Practice Questions - National Firefighter Selection Inventory (NFSI) Exam

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Passage: "A flashover is a near-simultaneous ignition of most combustible materials in an enclosed area. It occurs when the room reaches its ignition temperature and is one of the leading causes of firefighter fatalities." What is the main idea of this passage?

Flashover is a minor event that firefighters rarely encounter Flashover is the rapid ignition of contents in an enclosed space and a major firefighter hazard Flashover only happens outdoors Flashover is caused by water on a grease fire

Correct Answer:

Flashover is the rapid ignition of contents in an enclosed space and a major firefighter hazard

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