If you are talking form a grammatical point, the subject of "the warm inventor" would be the word "inventor".
Correct answer: C. an epic
Explanation: The answer A is incorrect, because a fairy tale is full of symbols, hidden themes and metaphors, answer B is incorrect because a Shakespearean play does not explicitly state its theme and lets the reader discover it.
An epic is a series of actions and events which unfold over a certain timespan, making the narrative thread easy to follow. The epic directly states its theme and the reader knows what it’s about right from the start.
