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... apply.
A. All the molecules or atoms in motion have kinetic energy.
B. Each molecule or atom in motion has kinetic energy.
C. Each molecule or atom in motion has thermal energy.
D. All the molecules or atoms in motion have thermal energy
Energy is not a physical unit. It is a philosophical concept and an accounting technique used to analyze mechanical and chemical exchanges. In nuclear physics it is defined as a wavelength of light, in biology it is a synonym for metabolism, and in public utilities they say energy when they mean connectivity. Anybody who uses the word in any other context either does not know what he is talking about, or is peddling something you don't need.
en.wikipedia.org/wiki/Energy Compare the opening statement to the note that it refers to. Notice the contortions they offer to avoid saying "We don't know what this word means."
Atoms or molecules in motion have momentum. Momentum can be measured as heat. So all the choices are correct.
