What driving condition requires a learner driver to use extra caution?

Answer: C — Rainy or snowy weather

Rainy or snowy weather necessitates extra caution for learner drivers due to several factors that can significantly affect vehicle control and stopping distances. In such conditions, the road surfaces can become slippery, which reduces tire traction and increases the risk of skidding. Learner drivers may not have sufficient experience to handle sudden skids or to judge the correct braking distances required when roads are wet or icy. Moreover, visibility can be compromised during rain or snow, as water can create reflections or snow can obscure road signs and lane markings. The combination of reduced visibility and slippery surfaces makes it essential for novice drivers to be extra vigilant, maintain a safe following distance, and adjust their speed accordingly. In contrast, while heavy traffic might also require caution, the primary concerns in rainy or snowy conditions often present a higher risk of accidents due to the environmental factors at play. Thus, understanding the specific risks associated with inclement weather is critical for learner drivers in safely navigating such conditions.