Select the option that expresses the given sentence in passive voice.

He gave Kaveri a beautiful yellow dress.

Kaveri was given a beautiful yellow dress by him.

The correct passive form of the given sentence is Kaveri was given a beautiful yellow dress by him.

The active voice of the sentence is He gave Kaveri a beautiful yellow dress. This sentence is in the simple past tense, which is used to describe an action that happened in the past. The passive voice of the sentence is formed by putting the subject of the active sentence after the verb "to be" and the past participle of the main verb. In this case, the subject of the active sentence is "Kaveri" and the main verb is "give." The past participle of "give" is "given." So, the passive form of the sentence is Kaveri was given a beautiful yellow dress by him.

The other options are incorrect because:

• Kaveri has given a beautiful yellow dress by him. is in the present perfect tense, which is used to describe an action that has happened in the past but is still relevant to the present. The action of giving Kaveri the dress happened in the past and is not relevant to the present.
• Kaveri is given a beautiful yellow dress by him. is in the present continuous tense, which is used to describe an action that is happening now but is not finished. The dress was given to Kaveri in the past, so the present continuous tense is not appropriate.
• Kaveri has been given a beautiful yellow dress by him. is also in the present perfect tense, but it is more grammatically correct than the first option.