Crumbling asphalt on a busy city thoroughfare has led to potholes deep enough to snap a wheel off an axle. Which of the four main causes of accidents is involved in this situation?

The main cause of accidents that is involved in this situation is roadway.

It should be noted that potholes is the depression in a road surface. It occurs when vehicles have removed or broken parts of the pavement.

Therefore, since crumbling asphalt on a busy city thoroughfare has led to potholes deep enough to snap a wheel off an axle, this implies that the cause of the accident is the roadway.

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C. Roadway

Explanation:

"Potholes" are considered major contributors of vehicle accidents. This is the reason why the roadway is often maintained by the government. This happens due to natural wear-and-tear situations or to a base that has not been properly compacted.

There are primarily four main causes of accidents: the driver, the vehicle, the roadway and the weather. In the situation above, it is obviously clear that the "roadway" is the one involved in the situation. The condition or state of the road is a factor that also contributes to accidents. Such potholes should be repaired.

So, this explains the answer.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.