which element is present negliglible in human body?

Options

A. O
B. C
C. H
D. Si

Answer

### Step-by-Step Solution:

1. **Understanding the Elements in the Human Body**:
- The human body is composed of various elements, with some being more abundant than others. The major elements include oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.

2. **Analyzing the Given Options**:
- The options provided are:
- Oxygen
- Carbon
- Hydrogen
- Silicon

3. **Identifying the Abundance of Each Element**:
- **Oxygen**: Approximately 65% of the human body mass.
- **Carbon**: Approximately 18.5% of the human body mass.
- **Hydrogen**: Approximately 0.5% of the human body mass.
- **Silicon**: Present in negligible amounts, not significantly contributing to body mass.

4. **Conclusion**:
- Among the options, silicon is the element that is present in negligible amounts in the human body compared to the other elements listed.

5. **Final Answer**:
- The element that is present negligibly in the human body is **Silicon**.