Going to the Mela

Sit on seats and don't jump around, Don't put hands or head out of window

Rohit's father told the children to sit on their seats and not jump around, and also asked them not to put their hands or head out of the window for safety.

City bus and autorickshaw

Mohan Chacha said that his family would meet Nita and her family directly at the mela ground. To reach there, they would take a city bus and then an autorickshaw. This makes "City bus and autorickshaw" the correct answer.

Ambulance, Police jeep, Fire engine, Lost and Found booth

At the entrance, there were an ambulance, police jeep, fire engine, and a Lost and Found booth with volunteers for safety and security.

Spinning tops, Puppets, Phirkis, Dolls

The story mentions that they bought spinning tops, puppets, phirkis and dolls from the toy stall.