The correct answer is C. In realistic contemporary drama you would most likely find a situation that is unremarkable. "Realistic" is often interpreted as ordinary; in contrast with fantasy, which deals with the impossible (or at least the scarcely possible), Realism describes common situations. Its goal is to describe human lives and society in a more "truthful" (or even quasi-documentary) manner. Stendhal's metaphor for the novel (a mirror which someone carries along a road, and which reflects both the sky and the mud) is pertinent here.