Why Does a Jacket Keep You Warm on a Windy

Multiple Choice

Why does a jacket keep you warm on a windy day?

A) Wind is the flow of cold air so the jacket prevents cold air from reaching the body.
B) The jacket prevents water vapor from getting near your body and absorbing body heat.
C) The jacket acts like a florist's greenhouse, trapping long-wavelength radiation near your body.
D) The jacket prevents the wind from blowing away the layer of air that has been warmed by your body.