Which dri refers to the averages within a population of recommended protein, carbohydrate, and fat intake ranges to decrease disease risk and provide diet flexibility?

The correct answer is AMDR or Acceptable Macronutrient Distribution Ranges.

DRI or Dietary Reference Intakes is defined as recommendent amount of energy, nutrients and other food components for healthy people to stay healthy and to prevent chronic disease risk, and deficiencies. DRI is set for each gender and age.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.