The two life stage groups with the highest RDAs for calcium are _________ and _________.Multiple Choicechildren; adolescentsinfants; childrenadolescents; adults over age 50infants; adolescents

To determine the two life stage groups with the highest RDAs for calcium, we need to consider the recommended dietary allowances (RDAs) for different age groups. Calcium is crucial for bone development and maintenance, and certain life stages require higher amounts due to growth or bone density preservation.

1. Infants: While infants need calcium for rapid growth, their RDA is not the highest compared to other groups.
2. Children: Children have a significant need for calcium for bone development, but their RDA is not the highest.
3. Adolescents: Adolescents experience rapid growth spurts and bone development, requiring a high intake of calcium.
4. Adults over age 50: This group needs increased calcium to maintain bone density and prevent osteoporosis.

Given this information, the two life stage groups with the highest RDAs for calcium are adolescents and adults over age 50.

Therefore, the correct answer is:

• adolescents; adults over age 50