Final answer:
Dr. Trance's instruction to Travaughn is an example of a post-hypnotic suggestion, which is a directive given during hypnosis to be carried out after the person awakens, triggered by a specific cue.
Step-by-step explanation:
The instruction given by Dr. Trance to Travaughn is an example of a post-hypnotic suggestion.
This is a directive issued to a hypnotized person that specifies an action to be performed after awakening, often in response to a cue.
In this case, the cue for Travaughn is the urge to smoke a cigarette, and the action suggested is to get up and get a glass of water instead. Post-hypnotic suggestions are used in hypnotherapy to help individuals change behaviors, manage pain, or overcome psychological issues.