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
