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.
<span>The composition of the poem also can be only assumed in the
light of various facts present. One certain fact is that the composition took
place after the death of Hygelac which was in 521 AD. If we look at the assumed
date of the death of Beowulf it tells us that most likely the composition date
is after 580 AD as that is the assumed death date of Beowulf. The manuscript was written before 1000
AD so in between these periods was Beowulf composed.</span>
When we look at the cultural values and various contexts of the epic it tells us that Beowulf took place in the time of the Old English period or which is popularly known as Anglo-Saxon period.
