Which of the following vitamins is generally excreted in human urine?

Options

A. Vitamin C
B. Vitamin A
C. Vitamin K
D. Vitamin D

Explanation

To determine which vitamin is generally excreted in human urine, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Vitamins**:
- Vitamins are classified into two main categories: water-soluble and fat-soluble.
- Water-soluble vitamins include Vitamin C and the B vitamins, while fat-soluble vitamins include Vitamins A, D, E, and K.

2. **Identify the Excretion Process**:
- Human urine primarily consists of water and various dissolved substances, including salts and waste products.
- Water-soluble vitamins are more likely to be excreted in urine because they dissolve in water.

3. **Focus on Water-Soluble Vitamins**:
- Among the water-soluble vitamins, Vitamin C and the B vitamins are known to be excreted in urine.
- Fat-soluble vitamins, on the other hand, are not typically excreted in urine due to their solubility in fats rather than water.

4. **Select the Correct Vitamin**:
- From the options provided, we need to identify which vitamin is commonly excreted in urine.
- Vitamin C is a water-soluble vitamin that is readily excreted in urine when consumed in excess.

5. **Conclusion**:
- Based on the above analysis, the vitamin that is generally excreted in human urine is **Vitamin C**.

### Final Answer:
**Vitamin C**

---