Final answer:
The technique the nurse should use is role-playing, which involves acting out specific situations to practice and develop new behaviors.
Step-by-step explanation:
The technique the nurse should use to provide opportunities for the patient to try out new, more assertive behaviors is role-playing. Role-playing involves acting out specific situations to practice and develop new behaviors. This technique allows the patient to practice assertive communication in a safe and controlled setting. The nurse can play different roles in the scenario, giving the patient a chance to experiment with different responses and build confidence in their assertiveness skills.