Choose the most appropriate preposition to fill in the blank.
The old man is looking forward _______ the visits of his grandchildren.

Correct option is C

The correct preposition is to.
· Explanation:
· The correct phrasal verb is "look forward to", which is always followed by a noun or gerund (–ing form).
· Hence, the sentence becomes: The old man is looking forward to the visits of his grandchildren.
· Grammatical rule used:
· “Look forward to” is a fixed phrase that always takes "to" as a preposition, not part of the infinitive.
Explanation in Hindi:
“Look forward to” का अर्थ होता है किसी चीज़ की प्रतीक्षा करना या उत्साह से इंतजार करना। इसके साथ हमेशा "to" preposition लगता है।
Meanings of other options:
· (a) for – incorrect with this expression.
· (b) in – wrong usage.
· (d) with – incorrect preposition.