Answer:
A. The Water-rat is arrogant and self-involved.
Answer:
Both the Roman Republic and Roman Empire had periods of instability which ultimately caused their demise. Interestingly, each lasted for almost the same amount of time, so it would be difficult to ascertain one as more "successful" than the other. However, if one considers the extent of the Roman Empire and its continuation from Byzantium after the collapse of the Western Empire, then the Empire was ultimately more successful than the Republic.
Explanation:
I would say the last one doesn't make any sense, because it attempts to blur the lines between what makes something art, versus it being literature. Instead of connecting the two through theme or emotion, it attempts to make the generalization that they are exactly the same. Also, this option is kind of like the black sheep in comparison to the other answers, as the others all delve into the subject matter, and this one gives no reasoning. If one of the other's are wrong, then that would pretty much mean that they are all wrong, which wouldn't make much sense.
Proud certainly has a positive connotation when compared to prideful because prideful implies that you are being arrogant and "stuck-up" about it while proud directs you towards happy for what you have accomplished and grateful that you were able to.