Answer:
D. Line of sight restrictions
Step-by-step explanation:
The urban area is denser when it comes to the population of people compared to the rural area. This means that the traffic is heavy and there are many people crossing the streets. The buildings are also tall. These things block the person's view upon driving to his target destination. Therefore, he has many line-of-sight restrictions when driving in the city. He needs to be more careful in driving by using his mirrors in order to prevent accidents. Unlike in the countryside, the target area is usually visible to the sight of the driver.