What must you do at an intersection with no signs or signals?

At an intersection with no signs or signals, it is essential to yield to traffic on your right. This traffic rule is based on the concept of yielding to the vehicle that arrives first at the intersection, and when two vehicles arrive at the same time, the vehicle on the left must yield to the vehicle on the right. This rule helps ensure that intersections operate smoothly and safely, reducing the risk of collisions.

The correct answer emphasizes the importance of being aware of other vehicles and understanding right-of-way rules, which are crucial for navigating intersections safely. Yielding to traffic on your right helps maintain a predictable flow of traffic, allowing drivers to anticipate each other's movements and react accordingly.

In contrast, the other choices do not reflect the correct driving behavior in such situations. Proceeding without stopping disregards the need for caution and assessment of oncoming traffic. Yielding to traffic on the left would contradict typical right-of-way laws, and stopping and looking both ways, while a good safety measure, is not a requirement for right-of-way determination at an uncontrolled intersection. Thus, the correct action in this scenario is to yield to traffic on your right.