I think the answer is c but I could be wrong!!
He wants to make sure that he punishes Fortunato for his imagined wrongs, and he has to get away with it. At length I ... Finally, Montresor kills Fortunato by bricking him into the wall.
This is called using context clues.
The world's tropical rainforests are likely home to 40,000 to 53,000 tree species
hope this helped !
Lines 10,11,12,13,14,16 those are the repetition in the poem