Select the correct active form of the given sentence.
The building was surrounded by special commandos.

Correct option is C

The correct active form of the sentence is "Special commandos surrounded the building."
· Active Voice- Active voice is a grammatical structure in which the subject of the sentence performs the action expressed by the verb.
· Passive Voice- Passive voice refers to a grammatical construction where the subject of a sentence undergoes an action rather than performing it. In passive voice sentences, the emphasis is on the recipient or object of the action.
Conversion rule:
Subject + V2 + object. -> <- Object + auxiliary verb (was, were) + past participle + by + subject.
This maintains the past tense and active voice of the original sentence.