Which of the following is an example of a modular product?

• A. Vitamin tablets
• B. Electrolyte solutions
• C. Protein powders
• D. Whole eggs

Answer: (C)

Modular products are add-on ingredients designed to customize a base nutrition plan by delivering a specific nutrient, usually to adjust protein, carbohydrate, or fat while keeping the rest of the formula intact. They let you tailor amounts to meet an individual's needs without changing the overall structure of the meal or formula.

Protein powders fit this idea well. They are used to raise the protein content of a base feed or shake without drastically altering other macronutrients, making it straightforward to hit target protein goals. They’re essentially building blocks you can mix in as needed.

Vitamin tablets, on the other hand, provide micronutrients in a consolidated supplement and aren’t used to modify the macronutrient composition of a base formula. They’re a separate supplement rather than a modular component added to adjust protein or energy.

Electrolyte solutions are hydration or mineral-replacement products. While they adjust mineral balance, they are not the classic modular component used to tailor the macronutrient profile of a feeding.

Whole eggs are whole foods rather than modular add-ins; they introduce a wide range of nutrients in one complete package, not a single adjustable module.

So, the protein powder embodies the characteristic modular product: a selectable add-on used to customize nutrient delivery.