**Core Concept**
Total Parenteral Nutrition (TPN) is a formulation of essential nutrients, including carbohydrates, proteins, fats, vitamins, and minerals, administered intravenously to patients who cannot consume food orally. The primary goal of TPN is to provide the body with the necessary building blocks for energy production, growth, and maintenance.

**Why the Correct Answer is Right**
TPN typically includes a broad spectrum of essential nutrients. However, some nutrients are not included due to their availability in other forms or their potential for toxicity. For instance, fiber is not typically included in TPN, as it is not easily absorbed and can be a source of gastrointestinal upset. Additionally, certain nutrients like vitamin K and biotin are not included because they can be synthesized by the body.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect - Carbohydrates, proteins, and fats are essential components of TPN.
**Option B:** Incorrect - Vitamins and minerals are critical for various bodily functions and are typically included in TPN formulations.
**Option C:** Incorrect - Amino acids, which are the building blocks of proteins, are essential for growth and maintenance and are included in TPN.

**Clinical Pearl / High-Yield Fact**
It's essential to note that TPN formulations can be tailored to individual patient needs, and certain nutrients may be added or excluded based on specific requirements or contraindications.

**Correct Answer: C. Amino acids**