A nurse is teaching a class about professionalism. The nurse should include that joining a professional organization is an example of which of the following?

The correct answer is B: Professional commitment. Joining a professional organization demonstrates a nurse's commitment to their profession by actively engaging in networking, continuing education, and advocacy. It shows dedication to upholding the standards and values of the nursing profession. Choice A, professional identity, focuses more on how one perceives oneself professionally, not necessarily on active involvement. Choices C, D, and other options are not directly related to joining a professional organization and do not reflect the commitment aspect emphasized in the question.