Which type of fire detectors sends an alarm when the temperature of the
room rises dramatically?

A.
Odor-sensing

B.
Heat-sensing

C.
Smoke-actuated

D.
Flame-actuated

Explanation:
A rate-of-rise detector triggers an alarm
when the ambient temperature of a room increases rapidly. Another
type of heat-sensing detector, a fixed temperature device, sends an
alarm when the temperature passes a predetermined level.