Choose the sentence in the active voice:

The correct answer is Option (4) → Meena had already locked the shop when the customer arrived.

Active voice:

In this sentence Meena does the action: she locked the shop. “Had locked” is had + past participle (V3), the past perfect active. There is no “been”, so it is not passive. The passive would need had been + V3: “The shop had been locked by Meena.” “Arrived” is also active, because the customer does the arriving.

Why the Other Options are Incorrect?

Option 1: The final match had been called off because of the heavy rain. — Incorrect. “Had been called off” is had been + V3 and the match receives the action, so this is passive.

Option 2: The doors of the temple were closed by the priest at noon. — Incorrect. “Were closed” is were + V3 and the doors receive the action of the priest, so this is passive.

Option 3: The broken classroom window has been replaced at last. — Incorrect. “Has been replaced” is has been + V3 and the window receives the action, so this is passive. No doer is named, but the voice is still passive.