Answer:
The sentence "They're no more interesting than watching ice melt" is an example of C - a comparison for dramatic effect.
In this sentence, the speaker is comparing the level of interest in something (presumably a subject or activity) to the act of watching ice melt. The comparison is used to emphasize that the subject or activity is extremely uninteresting. By using a vivid and relatable image like watching ice melt, the speaker conveys the idea that the subject or activity lacks any excitement or engagement.
