Final answer:
When a stop is required at an intersection and no markings appear to indicate a stop line or crosswalk, the appropriate place to make the stop is before entering the intersection.
Step-by-step explanation:
When a stop is required at an intersection and no markings appear to indicate a stop line or crosswalk, the appropriate place to make the stop is before entering the intersection. You should come to a complete stop and yield the right-of-way to any vehicles or pedestrians already in the intersection. It is important to maintain a safe distance from the intersection to ensure clear visibility and allow for safe maneuvers.