What most clearly distinguishes this passage as an example of the Theater of the Absurd?
O A. The character's manner of walking makes him seem tired.
B. There would not be any windows on a more traditional stage.
C. The character's actions are repetitive and circular,
D. There is a mood of celebration, but it is not clear why.

Although the passage was not given, I would like to make a guess.

Explanation:

C. The character's actions are repetitive and circular.

Theatre of the Absurd took it's features from Modern Period tenets. Like Stream of Consciousness, Nihilism, Meaningless, Existentialism, Individualism and the likes. In such plays, nothing of significance is happening. It's monotonous, the same thing happening over and over again with no clear indication of it being over anytime soon. Human's existence lacks meaning and purpose, so there's nothing of note to be done.

For instance, in "Waiting for Godot" by Beckett, the cast were merely standing under a tree, waiting for someone they don't even know. They are prepared to wait there for the rest of their lives for someone they had no idea of his appearance.

i believe the answer is inference