B. In The Odyssey, Odysseus' men has to go along with him into the cave, no matter how afraid they may be.
Explanation:
The story is obviously The Odyssey, so we need "In The Odyssey" to show what we are basing this off on. It's not a because "No matter how afraid they may be." is part of the sentence, not a separate one. D is wrong because by saying "In this story" we dont know what story it is.
