Question

Active voice ? (Who presented)
convert into passive voice​

Answer 1

Answer:

it was presented by whom?

Answer 2

Explanation:

Note in these examples how the subject-verb relationship has changed. Because the subject is being "acted upon" (or is passive), such sentences are said to be in the passive voice. NOTE: Colorful parrots live in the rainforests cannot be changed to passive voice because the sentence does not have a direct object.

When the active verb is in the simple present tense, we make passive verb forms with is/am/are + past participle form of the verb. Note that the object of the active verb becomes the subject of the passive verb. The subject of the active verb becomes the object of the passive verb.

answer:

It waspresenteds by whom

hope this is helpful to you