According to my opinion , the child is given back to his parents by the stranger who might have called out the child's name and
parent's name at the announcement area of lottery where the parents must have found the child and thanked the stranger
with a packet of sweets and waved goodbye to the child who was grateful to the stranger.

Summary of "The Lost Child":
The story "The Lost Child" depicts the journey of a young child who gets separated from his parents in a crowded fair. The child becomes engrossed in various attractions at the fair and loses sight of his parents. He wanders around, feeling scared and lonely, desperately searching for them.

The Child's Journey:
As the child navigates through the fair, he encounters different distractions like toys, sweets, and animals. These distractions momentarily alleviate his fear and sadness, but deep down, he longs to reunite with his parents. Despite being tempted by these attractions, the child's ultimate goal is to find his way back to his family.

The Conclusion:
In the end, after a long and exhausting search, the child finally spots his parents in the crowd. Overwhelmed with joy and relief, he rushes towards them, embracing them tightly. The story ends on a heartwarming note, highlighting the strong bond between the child and his parents and the importance of family unity.

Final Thoughts:
"The Lost Child" serves as a poignant reminder of the unconditional love and security that family provides. It emphasizes the innate instinct of a child to seek comfort and protection in the presence of their loved ones. The story beautifully captures the emotions of fear, longing, and reunion, leaving a lasting impact on the reader about the significance of family bonds.