the couplet form support the meaning of the lines:
a. by completing the speaker's thought
Answer:
(B.) Reflective is the correct answer.
In Thorin's argument, Thorin promise to give Bard one fourteenth share of the hoard in silver and gold. He was talking about to Smaug's treasure. So the agreement was the Thorin gives Bard 1/4 of the treasure. At the same time, he refused since he thinks that he owes nothing humans only because the gold belonged to the humans first.
I hope I've help!