OE
There are two possibilities for the blank: something like a bad ending (yet another bad event occurred in December) or something like an inconvenience (relative to the other “devastating” events). A “coda” is an ending that sums up what came before, which, in this case, was pretty bad. A “rampage” is bad but does not fit grammatically before the word “to,” nor does it correctly describe an earthquake—rather, murderers or mobs go on rampages. A “prologue” would be at the beginning of the year, not at the end. “Catharsis” means an emotional release and doesn’t fit the context of a natural disaster, which would build up emotional distress rather than release it. And finally, “homily” is a lecture, sometimes religious, but this doesn’t fit the context of a natural disaster.
Answer: C