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

Rishabh was declared fit to play the next match.

They declared Rishabh fit to play the next match.

The correct active voice form of the sentence "Rishabh was declared fit to play the next match" is They declared Rishabh fit to play the next match.

The passive voice of the sentence is "Rishabh was declared fit to play the next match." 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 "Rishabh" and the main verb is "declare." The past participle of "declare" is "declared." So, the passive form of the sentence is "Rishabh was declared fit to play the next match."

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 "they," and the verb is "declare." So, the active form of the sentence is "They declared Rishabh fit to play the next match."

The other options are incorrect because:

• Rishabh declared them fit to play the next match." This sentence is in the active voice, but the subject of the sentence is "Rishabh," which is not the one performing the action.
• They will declare Rishabh fit to play the next match." This sentence is in the future tense, but the action of declaring Rishabh fit to play the next match has already happened.
• They had declared Rishabh fit to play the next match." 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, in this case, the action of declaring Rishabh fit to play the next match is not relevant to the present.