Answer: A) to show how threatening travel through Chiapas is.
Explanation: In the given excerpt from Enrique's Journey, we can see the description of how proud he is of having traveled through Chiapas eight times. The speaker refers to Chiapas as "the beast" to represent how threatening or dangerous travel through Chiapas is, and it is because of this that he is proud, and that he considers an achievement to face "the beast." So the correct answer is option A.