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

The keys have been forgotten by Jyoti.

Jyoti has forgotten the keys.

The active voice form of the given sentence "The keys have been forgotten by Jyoti" is Jyoti has forgotten the keys.

The passive voice of the sentence is "The keys have been forgotten by Jyoti." This sentence is in the present perfect passive voice, which is used to describe an action that has happened in the past and is still relevant to the present. 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 "keys" and the main verb is "forget." The past participle of "forget" is "forgotten." So, the passive form of the sentence is "The keys have been forgotten by Jyoti."

The active voice of the sentence is formed by putting the subject of the passive sentence before the verb and removing the word "by." In this case, the subject of the passive sentence is "Jyoti," and the verb is "forget." So, the active form of the sentence is "Jyoti has forgotten the keys."

The other options are incorrect because:

• Jyoti will have forgotten the keys." This sentence is in the future perfect tense, which is used to describe an action that will have happened before another action happens. However, there is no other action mentioned in the sentence.
• Jyoti had forgotten the keys." This sentence is in the past perfect tense, which is used to describe an action that happened in the past before another action happened. However, there is no other action mentioned in the sentence.
• Jyoti has been forgetting the keys." This sentence is in the present perfect progressive tense, which is used to describe an action that has been happening for a period of time and is still happening. However, the action of forgetting the keys is not happening now.