Final answer:
John underwent a traditional initiation ritual, reinforcing his identity.
Step-by-step explanation:
This question is about John's experience at a puberty ceremony. Based on the information given, option b) is the most accurate description of what happened to John. John underwent a traditional initiation ritual, reinforcing his identity as he participated in the ceremony with the Indian boys. This experience likely had a positive effect on John, leading to increased social acceptance among his community.