A. Brandon and Jake haven't been told the news yet.
Explanation:
The passive voice is used to put emphasis on who or what receives or experience an action instead of the one who performs the action, and it is made up of the appropriate form of the verb "to be" + the past participle of the main verb.
Sentence A exhibits those characteristics: It puts the focus on the people who have not received the news: Brandon and Jake, instead of the people who told the news; and it uses the appropriate form of the verb "to be", which it's "been" (because the sentence is in Present Perfect), plus the past participle of the verb "tell", which it's "told."
The "a) Brandon and Jake haven't been told the news yet" sentence uses the passive voice. A passive voice is used for focusing the sentence on the action of the subject and it is not important who or what is performing the action. The A sentence focuses on the "told" action and we can not identify the subject of that, thus it includes the passive voice<span>.</span>
