Fill in the blank with the most appropriate word.
Visitors ___________ to India's Independence Day from all over the world.
A verb is used to express an occurrence, action, or state. It is the grammatical centre of the predicate in a sentence.
An auxiliary verb is a verb which gives is used in the formation of tenses, moods, tones, etc.
Option B is correct as to indicates visitors' coming.
The other options are wrong as the subject is plural and leave and visit cannot be used as per the rules.
The correct answer is B)come