Why are you required to stop here?

You selected both answer 1 (because a pedestrian wants to cross from the left) and answer 2 (because a pedestrian wants to cross from the right), which is correct.

In German traffic law, especially near crossings or when visibility is limited, you are required to stop if a pedestrian wants to cross from either side of the road. This ensures the safety of all pedestrians, regardless of the direction from which they approach. The key rule is: always give priority to pedestrians waiting to cross, whether from the left or the right. Not stopping for pedestrians from both sides is a traffic violation and can be especially dangerous.

For future questions, remember to consider all sides for pedestrian crossing situations—it's not just about who is already on the road, but also about those clearly intending to cross from either direction.