Final answer:
Methane (CH4) would dissolve most readily in gasoline because it is nonpolar, and nonpolar substances tend to dissolve well in nonpolar solvents such as gasoline.
Step-by-step explanation:
To determine which substance dissolves most readily in gasoline, we need to consider the polarity of the substances in question. Gasoline is a nonpolar solvent, so substances that are also nonpolar tend to dissolve well in gasoline due to similar intermolecular forces. CH4 (methane) is a nonpolar molecule.
Among the given options, CH4 would dissolve most readily in gasoline because it is also nonpolar, aligning with the 'like dissolves like' principle in chemistry.