Choose the class of elements that is most likely a gas at room temperature.

a.) nonmetals
b.) metals
c.) metalloids
d.) inner transition metals

The best and most correct answer among the choices provided by your question is is the first letter or letter A. Nonmetals is the class of elements that is most likely a gas at room temperature.

The non-metals exist in two of the three states of matter at room temperature: gases (such as oxygen) and solids (such as carbon).

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A.