Vitamin C is

Options

A. Ascorbic acid
B. Nicotinic acid
C. Lipoic acid
D. Aspartic acid

Explanation

**Step-by-Step Solution:**

1. **Identify Vitamin C**: Vitamin C is scientifically known as L-ascorbic acid. It is important to note that this is the primary name used in scientific contexts.

2. **Classification**: Vitamin C is classified as a water-soluble vitamin. This means it dissolves in water and is not stored in the body, which is a key characteristic of water-soluble vitamins.

3. **Sources**: Vitamin C is naturally present in various foods, especially in citrus fruits like oranges, lemons, and grapefruits. It can also be found in other fruits and vegetables.

4. **Dietary Supplements**: In addition to being found in foods, Vitamin C is often added to dietary supplements. This is important for individuals who may not get enough from their diet.

5. **Biosynthesis**: Humans cannot synthesize Vitamin C endogenously, meaning our bodies do not produce it naturally. Therefore, it is considered an essential dietary component that must be obtained through diet.

6. **Deficiency**: A deficiency in Vitamin C can lead to a condition known as scurvy, which is characterized by symptoms such as fatigue, weakness, and bleeding gums.

7. **Conclusion**: In summary, Vitamin C, or L-ascorbic acid, is a vital nutrient that must be consumed through diet or supplements, and it plays a crucial role in maintaining health.