Answer:
<u>D</u><u> </u><u>is</u><u> </u><u>the</u><u> </u><u>best</u><u> </u><u>answer</u><u>.</u><u> </u><u>Hope</u><u> </u><u>this</u><u> </u><u>helps</u><u>!</u><u> </u>
No other anatomist tried a brain dissection before the narrator's attempt because people's brains did not have any problems back then. When the computing power of the people's brains started slowing down, it was then that the scientist decided to dissect the brain to investigate the reason why this was happening.
B- They both describe the main points of a text.
He offers Nick part in a business that he does on the side line in which he would a great deal of money
Nick now realized that Gatsby was not used to people doing favors for him without requesting something in return he also realized that Gatsby was lonely and did not have true friends