Correct option is A
The correct passive form of the sentence
"They considered it an impressive building" is
"It was considered to be an impressive building."
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Active Voice- Active voice is a grammatical structure in which the subject of the sentence performs the action expressed by the verb.
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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.
· This transformation correctly uses the passive voice to shift focus from the doers (they) to the object of their consideration (it), with "was considered" reflecting the past tense used in the active voice.
· Example: The painting was considered to be a masterpiece by the critics, similarly emphasizing the object of consideration in the passive form.
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Other options:
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(b) "It can be consider to be an impressive building" and
(c) "It was considering to being an impressive building" are grammatically incorrect.
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(d) "It is considered to be an impressive building" changes the tense from past to present, which does not reflect the original sentence’s time frame.