Final answer:
The RDA is the dietary reference intake that is estimated to supply the known nutrient needs of nearly all healthy people in the US. The RDA is a measure used by professionals to assess the quality of people's diets and is calculated based on the EAR (Estimated Average Requirement).
Step-by-step explanation:
The RDA (Recommended Dietary Allowance) is the dietary reference intake that is estimated to supply the known nutrient needs of nearly all healthy people in the US. The RDA is a measure used by professionals to assess the quality of people's diets and is calculated based on the EAR (Estimated Average Requirement), which is the estimated requirement for 50% of the population. The RDA is set to meet the needs of 97.5% of the population and provides quantitative advice to professionals about amounts of nutrients or food components to be of benefit.