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

As was customary, the young prince was brought to the podium in a diamond studded carriage for the coronation ceremony.

As was customary, the palace staff brought the young prince to the podium in a diamond studded carriage for the coronation ceremony.

The correct active voice of the given sentence is: As was customary, the palace staff brought the young prince to the podium in a diamond studded carriage for the coronation ceremony.

The passive voice of the sentence is The young prince was brought to the podium in a diamond studded carriage for the coronation ceremony. 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 "the young prince" and the main verb is "bring." The past participle of "bring" is "brought." So, the passive form of the sentence is The young prince was brought to the podium in a diamond studded carriage for the coronation ceremony.

The active voice of the sentence is formed by putting the subject of the passive sentence before the verb and removing the verb "to be." In this case, the subject of the passive sentence is "the palace staff" and the main verb is "bring." So, the active form of the sentence is As was customary, the palace staff brought the young prince to the podium in a diamond studded carriage for the coronation ceremony.

The other options are incorrect because:

• As was customary, the young prince brings himself to the podium in a diamond studded carriage for the coronation ceremony. is in the active voice, but the subject of the sentence is "the young prince." This is not correct because the young prince was not the one who brought himself to the podium.
• As was customary, the young prince is bought to the podium in a diamond studded carriage for the coronation ceremony. is grammatically incorrect. The verb "is bought" is not used with the past participle of the verb "bring."
• As was customary, the young prince brought in a diamond studded carriage to the podium for the coronation ceremony. is grammatically incorrect. The verb "brought" should not be used with the preposition "in."