B. Warm air rises and takes heat with it; eventually it cools and sinks.
Explanation:
Warm air rising and taking heat with it which eventually cools and sinks describes a typical convection current. This is not radiation
Convection and radiation are both forms of heat transfer alongside conduction.
Radiation is the only form of heat transfer that does not involve the use of a medium or particles.
Air is a medium and it flouts the concept of heat transfer by radiation.
Convection is mostly taking place in fluids especially liquid and gas.
learn more:
Convection brainly.com/question/377220?source=aid8168908
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