Answer: (b) The festival of Spring.
Step-by-step explanation:
This question is based on chapter 1 of the book, "The Lost Child'' about a boy who went to a festival with his parents and kept getting distracted by the many sights and goods on offer in the festival till he eventually lost his parents and began to cry for them.
The festival they had gone for was the Festival of Spring to celebrate the advent of spring and the beautiful vegetation that came with it.