On a cold February morning, a blower system in a car warms up after several minutes and blows air through vents in the floor, dashboard, and windshield. Eventually, the driver is able to unbutton his coat and stay warm when the outside temperature is still \({23^0}F\)

(B) Convection

Explanation

Convection is caused by the flow of heated liquid or gas through a volumetric medium.

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