Choose the grammatically correct sentence:

The correct answer is Option (1) → The girl whose cycle was stolen has told the hostel warden.

Possessive determiners:

• A possessive determiner comes before a noun and shows who owns it: my, our, its, whose. It has no apostrophe.
• In Option 1, “whose cycle” shows the owner. It means the girl’s cycle.

Why the Other Options are Incorrect?

Option 2: The farmer whom tractor broke down asked us for a rope. — Incorrect. “Whom” cannot come before a noun. To show the owner of the tractor, we need “whose”.
Corrected: The farmer whose tractor broke down asked us for a rope.

Option 3: Ours school van comes at half past seven every morning. — Incorrect. “Ours” is a pronoun and stands alone. Before a noun we use “our”.
Corrected: Our school van comes at half past seven every morning.

Option 4: The kitten keeps licking its’ paw near the heater. — Incorrect. “Its’” is not a word. The possessive determiner “its” has no apostrophe.
Corrected: The kitten keeps licking its paw near the heater.