Final answer:
Traffic signals contribute to pedestrian safety by allowing crossing at appropriate times and slowing down vehicles, thus preventing accidents. The correct action at a marked crosswalk is to yield to pedestrians.
Step-by-step explanation:
Pedestrian safety is a critical concern, especially in areas with high foot traffic like school zones and intersections near campuses. To ensure pedestrian safety, traffic signals are often installed at intersections where many pedestrians cross, like the one described at the intersection of Clay Street and Eagle Avenue. Not only do traffic signals allow pedestrians to cross at appropriate times, but they also act to slow down vehicles, preventing them from speeding through and potentially causing accidents.
For the situation in question, the appropriate action is (a) Yield to pedestrians.
This measure is applied at a marked crosswalk or in advance of locations where pedestrians may be crossing your path. Signals and signs reminding drivers to yield to pedestrians contribute to improved traffic safety and reduce the likelihood of accidents involving pedestrians.