Select the passive form of the given sentence.

People claim to have seen the wild and mad elephant in several cities.

The wild and mad elephant is claimed to have been seen in several cities.

The correct passive form of the given sentence is: The wild and mad elephant is claimed to have been seen in several cities.

The active voice of the sentence is People claim to have seen the wild and mad elephant in several cities. This sentence is in the present tense, which is used to describe an action that happens regularly. 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 "people" and the main verb is "see." The past participle of "see" is "seen." So, the passive form of the sentence is The wild and mad elephant is claimed to have been seen in several cities.

The other options are incorrect because:

• The wild and mad elephant was claimed to be seen by people in several cities. is in the simple past tense, while the original sentence is in the present tense.
• The wild and mad elephant has been claimed to be seen by the people in several cities. 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 wild and mad elephant is being claimed to be seen in several cities. is in the present progressive tense, which is used to describe an action that is happening now.