Question 1517 Deck General

The correct answer is C) flash point. The flash point of a liquid is the lowest temperature at which the liquid gives off sufficient vapors to form a flammable mixture with air. This is the key criterion that determines the flammability of a liquid. The flash point is the primary regulatory standard used to classify and handle flammable liquids. The other options are not directly related to the lowest temperature for a flammable vapor-air mixture. The lower explosive limit refers to the minimum concentration of vapors needed for ignition, the fire point is the temperature at which a liquid sustains burning, and the threshold limit value is an exposure limit for airborne contaminants, not a flammability characteristic.