The correct answer is A. "Fadeth" and "ruin'd."
Fadeth is just the old English way to write fade, and the verb to fade has a slightly negative connotation. If something fades, it disappears and you no longer have it. Similarly, ruin'd (which obviously stands for ruined), has a clearly negative connotation - meaning that something is destroyed.
So these two words give off the impression of a tone which is bad, sad, or gloomy, and therefore is the correct answer here.