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 heat being radiated from a thermal burner.
d. Hot air is transferred through density differences with cool air rising and hot air sinking.