Which phrase best describes nutrients such as carbohydrates, lipids, proteins, and vitamins in terms of carbon content?

• A. Organic
• B. Inorganic
• C. Water
• D. Nutrients w/ carbon

Answer: (D)

These nutrients are carbon-containing molecules with carbon-based backbones that define organic compounds. Carbohydrates, lipids, proteins, and vitamins all rely on carbon bonds to form their structures and functions in the body, from energy provision to building tissues and regulating processes. In nutrition, anything that has carbon is considered organic, while water and minerals are typically inorganic. Water lacks a carbon skeleton, so it isn’t organic, and minerals don’t have carbon chains. Describing these nutrients by their carbon content—“nutrients with carbon”—directly highlights what sets them apart from inorganic substances, making it the most precise fit for the prompt.