Final answer:
The sentence 'Lives are saved every day by the brave firefighters and police officers' is in active voice.
Step-by-step explanation:
The sentence, 'Lives are saved every day by the brave firefighters and police officers,' is active voice.
In active voice, the subject of the sentence performs the action of the verb. In this sentence, 'brave firefighters and police officers' is the subject, and they are performing the action of saving lives.
Therefore, option A) Active is the correct answer.