Final answer:
Julio's crime is an illustration of strain theory, which occurs when an individual cannot achieve their goals through legitimate means.
Step-by-step explanation:
Julio's behavior of robbing a convenience store due to not having enough money to pay for tuition is an example of strain theory. This sociological theory, developed by Robert Merton, explains deviant behavior as a result of the pressure individuals feel when they are unable to achieve socially valued goals through legitimate means. In Julio's case, his goal is to be financially successful enough to afford college tuition, but due to his inability to afford it through a socially acceptable way, he resorted to crime.