Select the most appropriate option that can substitute the highlighted words in the given sentence.
I insist on you being present.

Correct option is B

The correct substitution of the highlighted words is (b) your being.
Explanation: When a gerund (verb + ing acting as a noun) is preceded by a pronoun, it must be in the possessive case. “Being” here is a gerund, so “your” is the correct possessive pronoun.
Grammatical rule used:
�� Use possessive case before a gerund: my, your, his, her, our, their + gerund
Example: I appreciate your helping me.
�� Information Booster: A common error is using object pronouns (like “you”) instead of possessive pronouns before gerunds.