Question

1. the six major classes of nutrients are:

a. water, carbohydrates, vitamins, minerals, proteins, starches
b. water, sugars, vitamins, minerals, proteins, starches
c. water, fats, lipids, vitamins, carbohydrates, minerals
d. water, fats, minerals, vitamins, proteins, carbohydrates

Explanation:

The six major classes of nutrients are water, carbohydrates, fats (lipids), proteins, vitamins, and minerals. Let's analyze each option:

• Option A: Includes starches, but starches are a type of carbohydrate, not a separate major nutrient class. Eliminate A.
• Option B: Includes sugars (a type of carbohydrate) and starches (also a carbohydrate), so these are not separate major classes. Eliminate B.
• Option C: Has water, fats (lipids), vitamins, carbohydrates, and minerals, but misses proteins. Wait, no—wait, let's re - check. Wait, the six major nutrients are water, carbohydrates, lipids (fats), proteins, vitamins, and minerals. Wait, Option D: water, fats, minerals, vitamins, proteins, carbohydrates. Let's check again. Wait, maybe I made a mistake. Wait, the six major nutrient classes are: water, carbohydrates, lipids (fats), proteins, vitamins, and minerals. So let's check each option:
• Option A: water, carbohydrates, vitamins, minerals, proteins, starches (starches are carbs) → wrong.
• Option B: water, sugars (carbs), vitamins, minerals, proteins, starches (starches are carbs) → wrong.
• Option C: water, fats (lipids), vitamins, carbohydrates, minerals → missing proteins? Wait, no, maybe the option has a typo? Wait, no, looking at Option D: water, fats, minerals, vitamins, proteins, carbohydrates. Yes, that's all six: water, fats (lipids), minerals, vitamins, proteins, carbohydrates. Wait, but let's confirm the six major nutrients: The six essential nutrient classes are carbohydrates, lipids (fats), proteins, vitamins, minerals, and water. So Option D includes all six: water, fats (lipids), minerals, vitamins, proteins, carbohydrates. Option C: water, fats, lipids (fats and lipids are the same), vitamins, carbohydrates, minerals → but it's missing proteins? Wait, no, maybe I misread Option C. Wait, Option C: "water, fats, lipids, vitamins, carbohydrates, minerals"—but fats and lipids are the same, so that's redundant, and it's missing proteins. Option D: water, fats, minerals, vitamins, proteins, carbohydrates. Yes, that's the six: water, carbohydrates, fats (lipids), proteins, vitamins, minerals. So Option D is correct. Wait, but let's check again. Wait, maybe the original question's Option D is "water, fats, minerals, vitamins, proteins, carbohydrates"—yes, that's all six. So the correct answer is D.

Answer:

D. water, fats, minerals, vitamins, proteins, carbohydrates