Final answer:
At an uncontrolled intersection, the correct action is to yield to the car on the right. This rule helps to prevent accidents by providing a clear method to determine which vehicle has the right-of-way when there are no traffic signals or signs.
Step-by-step explanation:
When two cars arrive at an uncontrolled intersection at the same time, the correct procedure is to yield to the car on the right. This is a standard traffic rule that applies to situations where there are no traffic signals or signs to regulate the flow. It helps prevent confusion and accidents at these intersections.
The options related to the size of the vehicle, such as yielding to a larger or heavier car, or coming to a complete stop and waiting for the other car to go regardless of position, are not standard traffic rules for handling this situation. Each driver should exercise caution, check the intersection for safety, and comply with the rule to yield to the car on the right. Remember, safety and adherence to traffic rules are paramount while driving.