C
Realist literature focuses on being in tune with the aspects of reality and daily life.
The correct answer is B. exploring the imagination and emotions of the individual.
C also can be correct, but if you need to choose just one answer, then I'd rather go with B. Romanticism in general is all about emotions, and the imagination that both the authors and the characters portray in their lives. A is all about Modernism, rather than Romanticism. D and E are all about Enlightenment and Classicism, rather than Romanticism.
Finally one i can answer. The answer is Idiom