Final answer:
B) Must be written in prescription by MD. A personal trainer can provide nutritional advice if it is included in a written prescription by a medical doctor.
Step-by-step explanation:
A personal trainer (PT) can provide nutritional advice under certain conditions. The correct answer is B) Must be written in prescription by MD. A PT can provide nutritional advice if it is included in a written prescription by a medical doctor. This means that a PT can work together with a medical doctor to create a comprehensive health plan for a patient, which may include exercise and nutritional recommendations.
It is important to note that a PT is not a registered dietitian and does not have the same level of expertise in nutrition. Therefore, it is always recommended to seek advice from a registered dietitian or a medical doctor specializing in nutrition for more specific and individualized nutrition guidance.