Final answer:
The correct answer is option c, which states that you must leave at least half the road for vehicles going in the opposite direction when driving on a two-way road with no centerline markings.
Step-by-step explanation:
The correct answer is option c. When driving on a two-way road with no centerline markings, you must leave at least half the road for vehicles going in the opposite direction. Without a marked centerline, a road still essentially has two lanes and it's important to drive as though there is an invisible line dividing your side of the road from the oncoming traffic's side. This means that you should not use the full road even when there is no oncoming traffic, as it's essential to maintain proper lane discipline to avoid accidents and confusion. Instead, you need to position your vehicle to allow enough room for potential oncoming vehicles, ensuring you are driving safely and courteously.
When driving on a two-way road with no centerline markings, it is important to allow enough space for vehicles traveling in the opposite direction. By leaving at least half the road, you ensure that there is enough room for both you and the oncoming traffic to safely pass each other.