Answer: I would contend that the right answer is the B) He gains knowledge through experience.
Explanation: Just to elaborate a little on the answer, it can be added that in this excerpt from Stephen Vincent Benét's short story, the narrator reveals that, after being allowed into the dead houses, he "was no longer afraid" and he "learned the way of those houses," and he briefly describes some of the characteristics of the bones. This suggests that he gained knowledge through experience, by visiting those places and learning about their contents.