Final answer:
The flash point is the minimum temperature at which a liquid emits enough vapors to ignite but not sustain combustion. so, option B is the correct answer.
Step-by-step explanation:
The minimum temperature at which a liquid gives off sufficient vapors to ignite but not sustain combustion is known as the flash point. The flash point is a safety indicator, particularly important in the handling and use of flammable liquids. It differs from the fire point, which is a higher temperature where the vapors can sustain combustion after being ignited, and from the boiling point, which is the temperature at which a liquid's vapor pressure equals the pressure of the gas above it, causing the liquid to turn into a gas.
The flash point is the minimum temperature at which a liquid gives off sufficient vapors to ignite, but still not sustain combustion.
The minimum temperature at which a liquid gives off sufficient vapors to ignite, but still not sustain combustion, is called the flash point. The flash point is the temperature at which the vapor pressure of a liquid equals the pressure of the gas above it. It is an important factor in understanding the flammability of a substance.