B because it's not A or C. A coat does not heat you up because the coat itself does not produce any heat on a molecular level. It's not C because coats are not hot, they do not produce heat.
it prevents your body heat from escaping into the air.
<h2>explanation:</h2>
In particular wintertime, we frequently wear coats.
Coats help keep us warm due to the stuffing inside the materials. The coat retains the body warmth in. This capacity to keep heat in is what keeps us warm.It traps air inside it which warms up ultimately due to your body temperature
