A.active
In the Active Voice, the Subjec of a sentence Performs an Action on an Object.
-The subject is active carrying on an action (He leads the orchestra).
In active voice the word order is the usual, and the direct object, that which recieves the action of the verb usually comes at the end of the sentence.
In the Passive Voice, the Subject is Acted Upon by an Object. To the contrary if the sentence was written in the passive it would be:
-The orchestra is lead by the conductor. In this case
In passive voice often the subject who performs the action is unimportant or unkown. For example.. The orchestra was lead but the name of the conductor seems to lack importance.