What should you do?

You selected both "Slow to walking pace" and "Remain ready to brake", which is fully correct. In this situation, visibility is blocked by the parked cars, especially since there are children and a ball near the cars, indicating that a child might suddenly run onto the road. The correct rule is to reduce your speed to walking pace and be prepared to brake at any moment. Continuing to drive as normal would be dangerous because you must be able to stop quickly if a child appears. Always be extra cautious when you see signs of children near the street.