I find all of the answers pretty neutral (that is, giving only facts, no judgements) except on sentence 3: this is because of the word "sharply".
It seems that the author of this sentence makes a judgement about the split: that they're very split, that their argument was very intense. It seems like a judgement to me more than the other sentences.
Answer: the story is funny because it says the chair is stuck to the persons backside at the end. It leaves suspense and humor.
Explanation:
I took the test.
Answer:
D. is precise, (but A. Is sadly amusing).
Explanation:
Is prideful and overly confident --i hope this helps