Me with i think #4 would be c. resolving a conflict, #5 would be d. all of these, and #6 would be d. incorporates all of these, are these correct?

What is the main goal of recommended dietary allowances (rdas)? to inspect school cafeterias across the united states to regulate foods sold at supermarkets and farmers' markets to investigate claims of tainted food being served in restaurants to indicate daily nutrient requirements