Select the correct passive form of the given sentence.

The committee has discussed the matter for several days.

The matter has been discussed by the committee for several days.

The correct passive form of the given sentence is The matter has been discussed by the committee for several days.

The sentence "The committee has discussed the matter for several days" is in the active voice. The active voice is formed by putting the subject of the sentence before the verb and the past participle of the main verb. In this case, the subject of the sentence is "the committee" and the main verb is "discuss." The past participle of "discuss" is "discussed." So, the active form of the sentence is "The committee has discussed the matter for several days."

The passive voice 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 "the matter" and the main verb is "discuss." The past participle of "discuss" is "discussed." So, the passive form of the sentence is The matter has been discussed by the committee for several days.

The other options are incorrect because:

• The matter was discussed by the committee for several days is in the past tense, while the original sentence is in the present perfect tense.
• The matter has discussed by the committee for several days is grammatically incorrect. The verb "to discuss" is followed by a direct object, but the phrase "the matter has discussed by the committee for several days" does not have a direct object.
• The matter is being discussed by the committee for several days is in the present progressive tense, while the original sentence is in the present perfect tense.