What is shown in the image?

The correct answer is "D. Intersection ahead." This is because the image depicts a road sign that warns drivers of an upcoming intersection. The symbol of two perpendicular lines meeting at a right angle is a universally recognized indicator for an intersection. In this context, it's essential for drivers to be alerted to the possibility of other vehicles crossing their path, which is why the intersection ahead sign is crucial for promoting safety and ensuring drivers are prepared to navigate the upcoming traffic situation.