this image shows warm air from the radiator rising towards the ceiling. why does this happen? a the warm air…

this image shows warm air from the radiator rising towards the ceiling. why does this happen? a the warm air is denser than the cool air b there are more molecules in the cool air than in the warm air c the warm air is less dense than the cool air d there are more molecules in the warm air than in the cool air
Answer
Brief Explanations:
Warm air expands and becomes less dense than the surrounding cool air. According to the principle of buoyancy, less - dense substances rise in more - dense substances. So warm air from the radiator rises towards the ceiling.
Answer:
C. The warm air is less dense than the cool air