The correct answer is: B. gasoline and ethanol.
Gasohol is a mixture of gasoline and ethanol. It is a renewable fuel that can be used in cars and other vehicles. Ethanol is a type of alcohol that is made from plant materials, such as corn or sugarcane. It is a cleaner-burning fuel than gasoline, and it can help to reduce emissions.
Methanol is another type of alcohol, but it is not as commonly used in gasohol. It is a more toxic fuel than ethanol, and it can be harmful to the environment. Propanol is a type of alcohol that is even less commonly used in gasohol. It is a more flammable fuel than ethanol or methanol, and it is not as efficient.
In conclusion, gasohol is a mixture of gasoline and ethanol. It is a cleaner-burning fuel than gasoline, and it can help to reduce emissions.