The correct answer is sentence (5).
A sentence fragment means that it is only a part of a sentence; it is not complete. Given that it is incomplete, the fragment, aka subordinate/dependent sentence, has to be part of a larger, independent sentence, in order to make any sense. So if you combined sentence (5) with another one, it wouldn't be a fragment anymore.
Beam would be replaced with Streak
Hope that helped! Good luck!
Answer:
no idea sorry,.........I am not of this level
I think your right I can’t see the first one because of the light
