Answer
A
Explaination
If he’s wants to be a web game programmer than that’s why he need a degree in software engineering! If I’m wrong sorry!
He could not imagine the possible danger he could face. This means that he did not prepare properly.
1. Homo sapiens is the scientific name for human beings
Nick refers to Tom and Daisy Buchanan as careless people because he's witnessed them ruin lives and simply disappear by hiding behind their wealth.