The subject of the Active Voice is changed into the object of the Passive Voice. Also, the object of the Active Voice is changed into the subject of the Passive Voice.
The usage of a "to be" form of verb is necessary while changing the voice of the sentence from Active to Passive.
In Passive Voice, the preposition "by" is used before the object. However, it is optional in some cases.
The Active voice in this question is in Present Indefinite. Thus, the Passive voice will also be in Present Indefinite.
The format of Active voice is: Subject + V1/V5 + Object.
Thus, in Passive voice, the format will be: Object of the active voice (Subjective case) + am/is/are + V3 + by + Subject of the active voice (Objective case).
For example:
She likes you. (Active Voice)
You are liked by her. (Passive Voice)
The options except (3) don't follow the correct grammatical format of the Passive Voice.
Study Notes
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