Answer:
Piaget's theory of cognitive development is a comprehensive theory about the nature and development of human intelligence. It was originated by the Swiss developmental psychologist Jean Piaget (1896–1980). ... Piaget's theory is mainly known as a developmental stage theory.
Explanation:
Vitamin A nutritional has the greatest within-person variation and thus requires the most recorded days of intake. It is a micronutrient.
<h3>Micronutrients and vitamin A</h3>
Micronutrients such as vitamins and minerals are nutrients obtained from the diet in small amounts.
Vitamin A (retinol) is a fat-soluble micronutrient whose daily intake is variable in different individuals.
Vitamin A is a micronutrient that helps the body's natural defense against pathogenic microorganisms (e.g., bacteria).
Learn more about vitamin A here:
brainly.com/question/9179407