Which professional is described as having training in nutrition and holds a registered dietitian credential?

• A. Physician
• B. Registered Dietitian
• C. Dietitian Assistant
• D. Nutritionist

Answer: (B)

The key idea is: a professional with formal, standardized nutrition training and the registered dietitian credential has completed an accredited nutrition-dietetics program, fulfilled supervised practice hours, and passed a national examination. This combination certifies a high level of competency in nutrition care, including assessing dietary needs and providing medical nutrition therapy. In practice, such a credential signals a dedicated track in nutrition and the ability to deliver evidence-based nutrition counseling in clinical and community settings.

In contrast, a physician is trained as a medical doctor with expertise across many areas, and while they may provide nutrition guidance, they do not carry the registered dietitian credential by default. A dietitian assistant (or similar support role) helps RD professionals but does not possess the RD credential themselves. A nutritionist is a broader, less standardized title that can vary widely in credentialing and training. Therefore, the person described as having nutrition training and the registered dietitian credential is the registered dietitian.