Final answer:
Jeremy would benefit most from joining Future Health Professionals or Business Professionals of America to gain clinical and entrepreneurial skills for his career as a registered dietitian and nutrition counseling business owner.
Step-by-step explanation:
Jeremy, who aspires to become a registered dietitian and eventually work for himself in a nutrition counseling business, would find it most beneficial to join Future Health Professionals or Business Professionals of America. Future Health Professionals would provide Jeremy with a community of peers and resources that align with clinical health care aspects of his career, while Business Professionals of America would offer valuable entrepreneurship skills and business knowledge that are crucial for starting and running his own business. These organizations will provide networking opportunities, leadership development, and practical knowledge that will be instrumental in achieving his long-term career goals.