Kites . . . . . . . . by children, adult, girls and boys in India.

A. flying

B. are flown

C. are fly

D. flew

Answer: Option B

Solution(By Examveda Team)

Sentence is in present tense with passive voice.
Rule :
Subject + is/am/are + V3 (third form of verb) + other agents.
Kites are flown by Children, adult, girls and boys in India.