Select the option that expresses the given sentence in active voice.
By whom was the entire house decorated?

Correct option is B

Active Voice- It denotes that the noun or pronoun that acts as the subject in the sentence is the doer of the action. In other words, the subject performs the action or acts upon the verb.
Passive Voice- represents that the subject is one acted upon by the action or verb in the sentence. It can also be said that the passive voice indicates that the subject in the sentence is no longer active but passive.
1. To convert the sentence to active voice:
· Agent Identification: The agent (the person performing the action) in the sentence is implied as "who."
· Action: "decorated"
· Tense Maintenance: Since the action is completed and was performed in the past, the active voice sentence must also use the past tense.
2. Analyzing the Options:
· (a) Who had decorated the entire house? - This uses the past perfect tense, which suggests an action completed before another past action, which is not implied in the original sentence.
· (b) Who decorated the entire house? - This option correctly uses the simple past tense, matching the tense and indicating a completed action consistent with the original.
· (c) Who will decorate the entire house? - This uses the future tense, inappropriate for an action already completed.
· (d) Who can decorate the entire house? - This implies ability or possibility in the present or future, which does not correspond to the completed past action.
Option (b) is correct because it maintains the original sentence's past tense and directly addresses the agent ("who") performing the past action of decorating, accurately reflecting the same event in active voice.