1.what causes a fire tornado to form ? 2. how are firefighters expected to deal with them ?

3. why are fire tornadoes rare ?

These start with a whirl of wind, often made visible by smoke, and may occur when intense rising heat and turbulent wind conditions combine to form whirling eddies of air. These eddies can contract a tornado-like vortex that sucks in debris and combustible gases.

The correct answer is b