Skids are likely to occur on which of the following roads?

Skids are particularly likely to occur on roads where snow has become packed. When snow is compacted, it forms a slick surface that can become icy, especially if temperatures fluctuate. This change in surface texture reduces traction for vehicle tires, increasing the risk of losing control and skidding.

Additionally, roads that have just been paved can also be hazardous; they may contain a layer of sealant or oil that can be slick for a period after paving. However, the question specifically emphasizes the likelihood of skids relating to packed snow, which is a well-known factor in winter driving conditions. Therefore, while both scenarios can contribute to skidding hazards, the packed snow surface is the more clear and predominant risk in terms of common driving challenges.