Question

a(n)______is any substance that must be provided to an organism to satisfy a nutritional need
o micronutrient
o essential nutrient
o trace element
o macronutrient

Explanation:

An essential nutrient is a substance that must be provided to an organism to satisfy a nutritional need. Macronutrients are nutrients needed in large amounts (e.g., carbohydrates, proteins, fats). Micronutrients are needed in small amounts (e.g., vitamins, minerals). Trace elements are a type of micronutrient. The key here is the definition - "must be provided to satisfy a nutritional need" directly aligns with the concept of an essential nutrient.

Answer:

essential nutrient