A nurse is collecting data to determine the best practice for reducing pressure injuries in clients. Which of the following roles is the nurse taking?

The correct answer is D: Researcher. The nurse is collecting data to determine the best practice for reducing pressure injuries, which aligns with the role of a researcher. Researchers gather information, analyze data, and draw conclusions to contribute to evidence-based practice. The other choices are incorrect because: A) Educator focuses on teaching and disseminating knowledge, B) Advocate involves supporting and speaking up for clients' rights, and C) Mentor involves guiding and supporting personal and professional growth. In this scenario, the nurse's primary focus is on conducting research to inform practice.