Final answer:
All of the options listed (option 4) —fluid dripping, visible cracks or holes in hoses or pipes, and decreased fluid levels—can be detected through a visual inspection if there is a car leak. A light rain can make driving hazardous by mixing with leaked oil and gasoline on the road, while a heavy rain might wash some away but increase hydroplaning risk.
Step-by-step explanation:
A visual inspection can detect several issues on a car if there is a leak. Fluid dripping from under the car is a direct indication of a leak. You might also see visible cracks or holes in the hoses or pipes during a visual inspection. Although not immediately visible, a decreased fluid level in the reservoir can be a sign of a leak as well. Therefore, the correct answer is 4) All of the above.
As cars travel, they can leak oil and gasoline onto the road surface. A light rain can combine with these hydrocarbons to create a slick and dangerous driving surface, reducing the control of the car. A heavy rain, however, might wash away some of the oil and gas, thus potentially offering slightly better control than during a light rain, but the risk of hydroplaning increases with the amount of water on the roadway.