for body grawth and repair , one needs

Options

A. Carbohydrates
B. Fats
C. protein
D. Vitamins

Answer

To answer the question "For body growth and repair, one needs:", we need to analyze the options provided and determine which biomolecule is essential for these processes.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are Carbohydrates, Fats, Proteins, and Vitamins.

2. **Analyze Carbohydrates**:
- Carbohydrates are primarily used for energy and are essential for cellular respiration.
- They do not play a direct role in body growth and repair.
- **Conclusion**: Carbohydrates are not the correct answer.

3. **Analyze Fats**:
- Fats are important for building cell membranes and serve as a long-term energy storage source.
- They also play a role in hormone production and insulation.
- However, they are not primarily responsible for body growth and repair.
- **Conclusion**: Fats are not the correct answer.

4. **Analyze Proteins**:
- Proteins are known as the primary building blocks of the body.
- They are crucial for growth, repair of tissues, and overall body structure.
- Proteins are involved in the synthesis of enzymes and hormones, which are vital for various bodily functions.
- **Conclusion**: Proteins are the correct answer for body growth and repair.

5. **Analyze Vitamins**:
- Vitamins are required in small quantities and are essential for various metabolic processes.
- They support cellular metabolism but do not directly contribute to body growth and repair.
- **Conclusion**: Vitamins are not the correct answer.

### Final Answer:
For body growth and repair, one needs **Proteins**.

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