I would say the best answer is A, he hides behind a tree. I was in between A and D, but one can run in a park.
B wouldn't work because him being dressed in ordinary street clothes doesn't show that he's afraid of something.
C wouldn't work because although yes, he was panting, that could mean that he's just tired; not necessarily, scared.
The man hiding behind the tree is the best evidence for the conclusion of him being afraid of something. Also in the passage it states, "....he moved behind a tree. Seeming not to notice my presence, he stood with his back against the trunk, panting."
The answer is b..........
Perhaps the poet uses a similar storyline with the purpose of conveying a different theme than the reader may have heard before.
It's embarrassment because we forgot what he learned. He embarrassed because the teacher is telling him everything he did wrong and he hears the students whispering in the classroom most likely about him.
