Final answer:
The RDAs take into account pregnancy, age, gender, and nutrient deficiencies, while the DRIs do not.
Step-by-step explanation:
The Recommended Dietary Allowances (RDAs) and the Dietary Reference Intakes (DRIs) both provide guidelines for the amount of nutrients needed for optimal health. However, the RDAs take into account certain factors that the DRIs do not. These factors include pregnancy, age, gender, and nutrient deficiencies. The RDAs are specifically designed to meet the nutrient needs of different population groups, including pregnant individuals, while the DRIs provide general quantitative advice for professionals.