Sentence 4
The topic sentence should set up what the paragraph is going to be about. This paragraph is about both heroes of the 1940s and heroes of the present, and sentence four is the only sentence that includes both. It also provides an indication that the paragraph is going to be comparing both types of heroes to each other.
<span>He is bigger and stronger than anyone else.</span>
Nick idolizes Gatsby because he admires Gatby's wealth, love for Daisy and his popularity.
<span>He is trying to say that there is something to be feared from people who keep silent despite bad circumstances because it shows that they are plotting something. There is nothing to be feared from a fool who exposes their thoughts and emotions.</span>