Ineed which best describes don quixote?
a.
he is a talented young person with great potential.
b.
he is a kind old man with a wild imagination.
c.
he is a well-trained knight who bravely faces dangerous situations.
d.
he is a selfish old man who is interested only in finding glory and fame for himself.

Given that Don Quixote was a humorous story, I can't fully agree with any of these, though the one who comes closest is B, as none of the situations were actually dangerous, though I am not certain how old he actually was.

D.) because in the book the author is writing in the context that our protagonist is  almost day dreaming about the old days of feudalism and presents the idea that maybe modernization is dangerous. The feudal system is primitive yes but is known. If we advance it could be disastrous. He is kind and spend most of the time pursuing a fine lady, who is actually a low-classes maid, so D is the best answer.