Yes, El Nino is known to have caused many natural disasters such as a recent volcanic eruption
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.
The Forum served as a stage for Roman politicians and philosophers. It was a sort of a square where people gathered to hear these politicians and philosophers speak.
She Susie. How. Keon too r ken w she
