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

Who is creating this mess?

By whom is this mess being created?

The correct passive voice form of the sentence "Who is creating this mess?" is By whom is this mess being created?

The active voice of the sentence is "Who is creating this mess?" This sentence asks who is responsible for creating the mess. The passive voice of the sentence is formed by putting the subject of the active sentence after the verb "to be" and the present participle of the main verb. In this case, the subject of the active sentence is "who" and the main verb is "create." The past participle of "create" is "created." So, the passive form of the sentence is "By whom is this mess being created?"

The other options are incorrect because:

• Who has created this mess? This sentence is in the simple past tense, which is used to describe an action that happened in the past. However, the action of creating the mess is not happening now.
• By whom has this mess been created? 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 creating the mess is not relevant to the present.
• By whom this mess being created is grammatically incorrect. The correct preposition to use with the verb "create" in the passive voice is "by."