Answer: The word "quixotic" is most clearly defined as "impractical".
Explanation: The word "quixotic" is an adjective and<u> it is mainly used to describe someone as unnecessarily idealistic</u>. In other words, <u>"quixotic"</u>, <u>which derives from the character "Don Quixote", can be defined as "impractical and unrealistic". </u>Therefore, the adjective "rational" cannot be applied to this word. Moreover, "sentimental" and "insane" do not capture the real meaning of "quixotic" either.
A is the best answer. Empathy is understanding another point of view but not necessarily agreeing with it. You can make your own arguments better if you take the time to understand the other point of view (empathy).