What is the most effective method for a New York driving instructor to address a student's consistent failure to check mirrors?

1. Install a beeping mirror reminder and rely on the device instead of teaching a habit
2. Use verbal prompts initially, then gradually fade prompts as the habit forms, reinforcing with positive feedback
3. Call out 'mirrors' constantly to create urgency, without fading the reminders
4. Ignore the repeated mirror error and expect the habit to emerge without feedback