Which of the following is an example of available liquid fuels in vehicles?

The correct answer identifies engine fuels, engine lubricants, and transmission fluid as examples of available liquid fuels in vehicles. This is because vehicles contain a variety of fluids that are essential for their operation. Engine fuels like gasoline and diesel are primary sources of energy for the vehicle's engine. Additionally, engine lubricants (such as motor oil) serve to reduce friction and wear within the engine, allowing for smooth operation. Transmission fluid is crucial for enabling gear changes and ensuring the transmission functions effectively.

In contrast, while gasoline is indeed a form of fuel, the other choices either narrow the scope too much or include non-fuel substances. Water is not a fuel and does not play a role as an available liquid fuel in vehicles. Thus, the broader comprehension that includes lubricants and transmission fluid supports the choice that encompasses the full range of liquid fuels typically found in vehicles.