Final answer:
The best way to determine the chief complaint when taking a health history of an adolescent is by asking the adolescent directly.
Step-by-step explanation:
The best way to determine the chief complaint when taking a health history of an adolescent is by asking the adolescent directly. Option b, which asks the adolescent, 'Why did you come here today?' is the most appropriate choice. This allows the adolescent to express their concerns and symptoms in their own words, providing valuable information for the nurse to assess. Directly asking the adolescent about the reason for their visit allows them to express their concerns and provides valuable information about their primary health issue or reason for seeking medical attention. This approach promotes open communication and ensures that the healthcare provider addresses the adolescent's specific needs and concerns.