Answer: The right answer is thr C) Devastation.
Explanation: Just to elaborate a little on the answer, it can be added that the word cataclysm derives from the Greek word kataklysmós, which translates as "flooding." A cataclysm can be understood as both a large catastrophe caused by a natural phenomenon or by a flooding and as a significant disruption in the social or political order. In this excerpt, it must be interpreted as a large catastrophe, or a devastation, due to the terrible natural phenomena that it caused — sea turned to acid, incinerated forests, and so on.