Which of the following is an example of a volatile solvent?

Gasoline is an example of a volatile solvent because it has a low boiling point and can readily evaporate at room temperature, releasing vapor into the air. Volatile solvents are typically characterized by their ability to quickly change from a liquid to a gas under normal atmospheric conditions, which makes them useful in various applications, such as cleaning agents, paints, and fuels.

In the context of the other options, while hairspray contains volatile solvents as part of its formulation, it is not solely categorized as a volatile solvent itself. Nitrous oxide, on the other hand, is a gas commonly used as an anesthetic and in some aerosol products but does not fit the definition of a solvent. Amyl nitrate is often classified as a nitrate ester and used medically for conditions such as angina but is also not primarily recognized as a volatile solvent in general chemical terms. Thus, gasoline stands out clearly as the best example of a volatile solvent among the provided choices.