Text: In a society with rigid ranks, people do not expect to rise above their station and therefore do not feel that they have failed if they do not rise.
Entailment: People in a society with rigid ranks don't feel like they have failed if they don't rise because they don't expect to rise above their station in the first place.
Contradiction: People always feel like they fail when they cannot rise above their station, regardless of the society they live in.