Fill up the blank with the correct option.
The principal has not come _________ the office.

Correct option is B

The correct option to fill in the blank is (b) To.
The preposition to is used when referring to movement toward a specific place. Here, the sentence indicates that the principal has not come to the office.
Grammatical rule used: Prepositions of Movement: To is used to show movement towards a destination.
Explanation of the grammatical rule in Hindi: जब किसी स्थान की ओर जाने की क्रिया को दर्शाया जाता है, तो to का प्रयोग किया जाता है। यहाँ प्रधानाचार्य कार्यालय नहीं आए हैं, इसलिए to सही है।
Meanings of other options:
· For: Indicates purpose or benefit, not direction.
· In: Indicates position inside a place, not suitable for movement.
· At: Refers to a specific point, not direction towards it.