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

Trumpets are being blown by the soldiers to announce the victory.

The soldiers are blowing the trumpets to announce the victory.

The correct active voice of the given sentence "Trumpets are being blown by the soldiers to announce the victory" is The soldiers are blowing the trumpets to announce the victory.

The passive voice of the sentence is "Trumpets are being blown by the soldiers to announce the victory." This sentence is in the present progressive tense, which is used to describe an action that is happening now but is not finished. 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 "trumpets" and the main verb is "blow." The past participle of "blow" is "blown." So, the passive form of the sentence is "Trumpets are being blown by the soldiers to announce the victory."

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 "the soldiers," and the verb is "blow." So, the active form of the sentence is "The soldiers are blowing the trumpets to announce the victory."

The other options are incorrect because:

• The soldiers were blowing the trumpets to announce the victory." This sentence is in the past progressive tense, which is used to describe an action that was happening but is not finished. However, the action of blowing the trumpets is still happening.
• The soldiers blow the trumpets to announce the victory." This sentence is in the simple present tense, but the action of blowing the trumpets is not happening now.
• The soldiers blew the trumpets to announce the victory." This sentence is in the simple past tense, but the action of blowing the trumpets is still relevant to the present.