Final answer:
To fix the issue of the message 'you win!' not displaying, the student should change Line 5 to a gettext command.
Step-by-step explanation:
The change that would fix the issue is Option 4) Line 5 - Change to a gettext command. By using a gettext command, the message 'you win!' would be correctly displayed. This command is used to display localized messages and can be helpful for displaying different languages or translations.