Final answer:
To become a nurse practitioner, a nurse must earn at least a Master's degree in nursing, which is more advanced than the basic nursing education and allows for a higher level of responsibilities.
Step-by-step explanation:
A nurse who wishes to pursue a degree as a nurse practitioner needs a minimum of a Master's degree in nursing. This advanced role goes beyond the basic nursing education and requires additional schooling, as nurse practitioners have more responsibilities, including diagnosing and managing patient care, and in many cases, can serve as a patient's primary health care provider. In contrast, individuals who seek a career as registered dietitians or epidemiologists would also need to attain at least a bachelor's degree in their respective fields, and often higher education such as a Master's or PhD is required or recommended for advanced positions.