The sentence that is written in active voice is letter A. Drew aimed his nerf gun at the target and pulled the trigger. This active voiced sentence can be clearly identified because it uses regular verbs such as AIMED AND PULLED in its normal way without the TO-BE. On the other hand, the other sentences are in passive voice because they use WAS FILLED, WAS GIVEN AND WERE PICKED. It is also important to mention that the passive voiced is used to highlight the object of the sentence not the subject which sometimes it is not necessary to mention it.