Select the correct active form of the given sentence.

You are asked to tell the plumber to mend all the pipes.

Tell the plumber to mend all the pipes.

The correct active form of the given sentence "You are asked to tell the plumber to mend all the pipes" is Tell the plumber to mend all the pipes.

The passive voice of the sentence is "You are asked to tell the plumber to mend all the pipes." This sentence is in the present tense, which is used to describe an action that happens regularly or now. 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 "you" and the main verb is "tell." The past participle of "tell" is "told." So, the passive form of the sentence is "You are asked to tell the plumber to mend all the pipes."

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 "plumber," and the verb is "mend." So, the active form of the sentence is "Tell the plumber to mend all the pipes."

The other options are incorrect because:

• Command the plumber mending all the pipes." This sentence is in the imperative form, which is used to give a command. However, the command is not clear. Who is giving the command? What is the plumber supposed to do?
• All the pipes must be mend." This sentence is in the infinitive form, which is used to express purpose or to indicate an action that is not yet complete. However, the action of mending the pipes has already been requested.
• Tell the plumber mending all the pipes." This sentence is in the active voice, but the verb is in the present participle form. The present participle form is used to describe an action that is happening now. However, the action of mending the pipes is not happening now. It is something that is being requested.