Answer: Because they are horror related words and adjectives.
Step-by-step explanation:
Hi, the portion of "Through the Tunnel" that describes Jerry’s journey through the tunnel uses words like "fear" and "horror" to create a sense of danger in the description of jerry thinking and shaking before enter swimming through the tunnel.
The words chosen by the author are also descriptive words like " panicky," and "frightened," that are related to fear and generates a sense of suspense when used in a description, and make a connection between the reader and Jerry.