Answer:
The best description of nutrition is option b: foods and health.
Step-by-step explanation:
Nutrition is the scientific study of how food affects the body, including how it is digested, absorbed, and metabolized, as well as how it affects growth, development, and overall health. Nutrition also involves the study of dietary patterns and the role of specific nutrients in the prevention and treatment of disease. Option a is incorrect because stress is not the primary focus of nutrition, although stress can have an impact on health. Option c is also incorrect because while some foods may have medicinal properties, the study of nutrition is not solely focused on this aspect of food. Option d is partially correct, but it does not fully encompass the breadth of the field of nutrition, which also includes the study of how foods can promote health and prevent disease.