What is the meaning of AI in nutrition?

The correct choice refers to "Adequate Intake," which is a dietary reference intake established for nutrients that do not have enough scientific evidence to determine a precise Recommended Dietary Allowance (RDA). The Adequate Intake level is set based on observed or experimentally determined approximations of nutrient intake by a group of healthy people. It provides a benchmark for assessing dietary adequacy. This is particularly important in guiding individuals and professionals in making informed decisions about nutrient intake, particularly for vitamins and minerals that might not have well-defined needs due to insufficient research.

The other terms listed are not recognized standards in nutritional guidelines. "Approved Intake" does not exist as a recognized measure, "Absolute Intake" is not a term typically used within nutritional contexts to describe dietary needs, and "Avoidance Index" has no standard meaning in nutrition. This reinforces the significance of the Adequate Intake in providing a framework for understanding nutrient requirements when specific evidence is lacking.