A - incorrect as it does have a hero.
B - correct. The fact that it tells a long narrative story, among other things (like that it tells the story of the hero) makes it an epic poem.
C - incorrect as it is one long story
D - incorrect, using words in a poetic manner is not enough to consider writing an epic poem.

Because the ladder was in flat position not in slant.

Think it this way. Should humans know everything or about everything, or are there certain things humans shouldn't know about?
If this was the missing excerpt:
Millicent sat down at her desk in the big study hall. Tomorrow she would come to school, proudly, laughingly, without lipstick, with her brown hair straight and shoulder length, and then everybody would know, even the boys would know, that she was one of the elect. Teachers would smile helplessly, thinking perhaps: So now they've picked Millicent Arnold. I never would have guessed it.
—"Initiation,"
<span>Sylvia Plath
</span>
It can be inferred that Millicent has not always been popular. A lot of people did not take any notice of her. It can even be said that she is a wallflower. Somebody who is there but remains unnoticed.