Parenthetical citation and works cited.
<span>According to ideas in Walden, I suggest you to go with this one: C) He would believe they were destructive to a person’s thinking ability. It's the closest one from options given above.</span>
Valéry argues that Europe’s intellectual crisis is caused by the horrors of wartime and the awareness that civilization could die out and also the future could be worse than the past. The horrors of the Nazi invasions and occupations of European countries and atrocities they committed against the populace and disregard for culture and science prompted this thinking.
Explanation:
Nick said it because of his previous experiences which were not so easy to handle and that have transformed his thoughts so much that he considered that his future would be same as his past. He even didnt remember his birthday, indicating that his mind is well occupied by the menacing experiences and thoughts. Since he has turned thirty so now people think its time to settle but for Nick its still a road of struggle ahead of him