Although there is no definitive temperature range for flashover, ____________ is widely accepted as temperatures for flashover conditions.

• A. 900-1200 degrees
• B. 1200-1500 degrees
• C. 800-1100 degrees
• D. 1000-1300 degrees

Answer: (A)

When studying flashover, the key idea is that a room can reach a heat level where all combustibles ignite almost simultaneously, causing rapid, full-room involvement. In fire behavior references, the temperatures associated with these flashover conditions are commonly described in the 900–1200 °F range. This broad window reflects real-world variation due to contents, ventilation, and heat release, but it’s the range most often cited as characteristic of flashover.

That makes this option the best pick: it aligns with the widely used guideline for flashover temperatures in training and practice. The other ranges sit outside that commonly cited window, either starting too high or too low to represent the typical conditions firefighters are taught to recognize as flashover.