Answer:
C. People often get laughed at for speaking up about deep ideas
Explanation:
According to the given excerpt from Endgame by Samuel Beckett, there is a conversation between Hamm and Clov where Hamm asks if they're not beginning to mean something, to which Clov scoffs and laughs at such suggestion. And with the introduction of a rational being, Clov drops his telescope and begins to ponder.
The theme the passage mostly clearly develops is that people often get laughed at for speaking up about deep ideas
https://www.sparknotes.com/lit/flies/section12/
It is a metaphor because the sentence is comparing two different things without using the word "as" or "like".
