Answer:
C
Step-by-step explanation:
The speaker is talking about a lone girl singing while reaping crops in a field. He advises anyone else who comes not to disturb her, so they likely don't know each other. He is entranced by her song and makes no comment on his feelings towards the girl, so it isn't likely that he hates her either. The speaker wonders what the poem is about, and in the last lines speculates about what it could be, implying he doesn't know the words.