Question

class e general knowledge question #14 / 50 when it rains, the roads are most slippery select a letter to choose your answer a after several hours of light rain. b just after the rain begins, because oil dropped from vehicles has not yet been washed away. c just after the rain stops and the road is drying off.

Explanation:

When it starts to rain, oil and other substances dropped from vehicles on the road haven't been washed away yet. These substances mix with the rain - water to form a slippery layer. After several hours of light rain, the oil is mostly washed away. When the rain stops and the road is drying off, the slippery effect is reduced compared to the start of the rain.

Answer:

B. Just after the rain begins, because oil dropped from vehicles has not yet been washed away.