Answer: B) He is a rational man who is unaffected by superstition.
Step-by-step explanation: In the given excerpt from "The Most Dangerous Game" by Richard Connell, we can see how Rainsford's refers to the superstitions expressed by the sailors as "pure imagination" and then explain how dangerous is to believe in superstition because of the feai it can cause. This dialogue reveals that Rainsford is a rational man who is unaffected by superstition (because he doesn't believe in it).