The most widely used compound as a source of `C_(2)H_(4)` is

Options

A. Kinetin
B. zeatin
C. IBA
D. ethephon

Explanation

To solve the question "The most widely used compound as a source of C₂H₄ is," we need to identify the compound that serves as a primary source of ethylene (C₂H₄).

### Step-by-Step Solution:

1. **Identify C₂H₄**:
- C₂H₄ is the chemical formula for ethylene, a simple alkene that is a colorless gas with a sweet odor.

2. **Determine Common Sources of Ethylene**:
- Ethylene is produced naturally by plants and is also synthesized for commercial use. It is important in plant growth and development, particularly in processes like fruit ripening.

3. **Recognize Commercial Compounds**:
- There are several compounds that can release ethylene, but we need to find the most widely used one. One such compound is ethephon.

4. **Identify Ethephon**:
- Ethephon is a plant growth regulator that releases ethylene when it decomposes. Its chemical name is 2-chloroethylphosphonic acid.

5. **Conclusion**:
- Therefore, the most widely used compound as a source of C₂H₄ is **ethephon**.

### Final Answer:
The most widely used compound as a source of C₂H₄ is **ethephon**.

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