The term used to describe a measure of a building's ability to withstand fire exposure for a defined period is:

• A. NFPA compliance
• B. Plot plan
• C. Fire resistance rating
• D. High risk properties

Answer: (C)

Fire resistance rating is the measure of how long a building component or assembly can withstand fire exposure under standardized test conditions. This rating, determined by tests such as ASTM E119 or NFPA 251, shows how long the element can maintain its integrity and limit heat transfer during a defined period. The rating is expressed in hours (for example, 1-hour or 2-hour), and it helps determine code requirements for fire separation and life safety. Other options don’t describe this time-based measure: NFPA compliance covers safety standards in general rather than a specific duration a component resists fire; a plot plan is simply the layout of the property; high risk properties is a classification, not a measure of fire resistance.