What action must you take at a pedestrian crosswalk?

At a pedestrian crosswalk, it is essential to yield to pedestrians, making this the correct choice. When approaching a crosswalk, drivers are legally required to give the right of way to pedestrians who are crossing or about to cross. This action promotes safety and helps prevent accidents, as pedestrians have the right to navigate these areas without fear of being struck by vehicles.

Yielding allows pedestrians to travel freely and ensures that drivers are demonstrating care and consideration for those who are on foot. It's important to remain alert and prepared to stop, even if no pedestrians are immediately visible, as they may approach the crosswalk unexpectedly.

Other actions, such as accelerating to clear the area, honking at pedestrians, or stopping only on a red light, do not prioritize pedestrian safety and could lead to dangerous situations or legal consequences.