Final answer:
Wet brakes can cause uneven application, not immediate rust or detachment from the vehicle. Light rain mixes with road oils, reducing vehicle control, while heavy rain may wash some away but still poses a risk.
Step-by-step explanation:
When brakes get wet, it can cause them to apply unevenly. This happens because the presence of water may lead to inconsistent friction on the brake rotors or drums, which can make the vehicle pull to one side or cause a pulsating feel when the brakes are applied. Rusting of brakes doesn't occur immediately upon getting wet; rust formation is a process that happens over time when metal remains exposed to moisture and oxygen. Therefore, the correct answer to this question is A. Apply unevenly. Wet brakes certainly do not fall off the vehicle nor do they rust immediately upon contact with water.
When oil and gasoline are present on the road surface and it rains lightly, the road becomes slippery, which greatly reduces the control of the car. A heavy rain might wash away some of the oil and gasoline, reducing the risk but still presenting dangerous driving conditions. The cohesive and adhesive properties of water contribute to the spread and stickiness of these substances on the road.