Answer:
1. East on the box they are facing, West on the side from behind, North on the left side, South on the right side.
2. Because they all were facing towards the sun and the sun rise from east.
3. This one's answer is in the first answer.
4. The picture shows early morning because the shadow of the boys are in a flat position but if would have been late morning then it would not been covering that much area.
