Active voice is when the subject performs the action(s) stated by the verb; whereas, passive voice is when the subject is acted upon by the verb. In this case, option C, is the correct one.
The fireworks are the subject of the sentence and they "light the night sky", resulting in active voice.
The person watching television won't question what the see/hear, and they'll start to believe everything on their TV.
The theme of believing in the good of people even at the worst of times is one that is prevalent in The Diary of Anne Frank. Allthough Anne is enduring horrors we can't even imagine, she believes that everything will be alright in the end. One clear example of goodness is the way in which Otto Frank’s four employees: Miep Gies, Johannes Kleiman, Victor Kugler and Bep Voskuijl agree to help the family hide despite the risk involved in helping jews, which could result in imprisonment, deportation and even being shot. Bep's father was also a big help, and cherished by the people living in the Annex. Although there are conflicts between the very different people living and hiding together, they all contribute to make a home and end up being a big family, helping each other bear the abominations going outside their safe space.