Answer:
Anecdotal.
Step-by-step explanation:
Anecdotal evidence is a claim that relies primarily on a personal account or told by an individual. It can be in different forms, be it testimonials, memories, or even word of mouth.
In the given excerpt from Eric Schlosser's "A Look at the Fast Food Industry", the narrator is using an anecdotal type of evidence in talking about the routine of Elisa and the manager. The narrative focuses mainly on the view of Elisa and relies on one person rather than on the experience of the other workers.
Thus, the correct answer is anecdotal.