Final answer:
The nurse should introduce himself or herself first when seeing an adolescent boy and his parents in the clinic for the first time.
Step-by-step explanation:
The nurse should do a. Introduce himself or herself first when seeing an adolescent boy and his parents in the clinic for the first time. It is important for the nurse to establish rapport and build trust with the family. By introducing themselves, the nurse shows respect and creates a welcoming environment for the boy and his parents.