Select the correct passive voice of the given sentence.

Preeti invited Ritu for a party.

Ritu was invited for a party by preeti.

The correct passive voice form of the given sentence "Preeti invited Ritu for a party" is Ritu was invited for a party by Preeti.

The active voice of the sentence is "Preeti invited Ritu for a party." 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 "Preeti" and the main verb is "invite." The past participle of "invite" is "invited." So, the passive form of the sentence is "Ritu was invited for a party by Preeti."

The other options are incorrect because:

• Ritu is invited for a party by preeti." This sentence is in the present tense, but the action of inviting Ritu for a party happened in the past.
• Ritu has been invited for a party by preeti." This sentence is in the present perfect tense, which is used to describe an action that has happened in the past and is still relevant to the present. However, the action of inviting Ritu for a party is not relevant to the present.