Final answer:
The question is misdirected since RDAs refer to Recommended Dietary Allowances, which are guidelines for nutrient intake, not tasks for certified professionals. Instead, RDAs provide values to assist in creating menu plans that meet nutritional needs, aiding in maintaining overall health.
Step-by-step explanation:
The student's question seems to be regarding the tasks that Registered Dietetic Assistants (RDAs) must be certified to perform, which is related to the field of dietetics and nutrition. However, the provided details about creating a menu based on RDA guidelines suggest that the question might be referring to the Recommended Dietary Allowances, which are used to assess and create adequate diets meeting the nutritional needs of different groups. The RDAs provide guidance on the optimal intake of various nutrients to ensure good health and wellbeing, taking into consideration factors such as age, sex, and life stage. The guidelines help in formulating diets and menu plans that prevent deficiencies and support overall health, in conjunction with a lifestyle that includes adequate rest, reduced stress, and regular exercises for physical, mental, and emotional balance. The RDA values are derived from the Estimated Average Requirements (EAR), which represent the nutrient intake estimated to meet the requirements of 50% of the population.