A high school student thinks that the longer a student has been at the school, the less satisfied they are

with the food in the cafeteria. To see if this theory holds for students at her school, she gives a two- question survey to the first 100 people who enter the cafeteria on a certain day. The first question is, "How long have you attended school here?" The second question asks the student to rate the food in the cafeteria on a 1 to 5 scale.

Identify a potential drawback of the sampling method used in Question 1, part (a).