Answer: C. All of the problems they tried to escape come right back.
Step-by-step explanation:
Modernism was based on an idealistic society and a belief in progress. For the story given in the question to qualify as a work of Modernism, little changes just happen to them and their problems continue as they did before.
Therefore, the correct option based on the options given will then be All of the problems they tried to escape come right back.