Convection ovens are ovens that are advertised to cook food more evenly than a standard thermal oven. Which statement best explains how a convection oven works?
a: Hot air is transferred through molecule to molecule contact.
b: Hot air is transferred through density differences with hot air rising and cool air sinking.
c: Hot air is transferred through density differences with cool air rising and hot air sinking.
d: Hot air is transferred through heat being radiated from a thermal burner.