An organic compound must contain

Options

A. carbon
B. boron
C. oxygen
D. nitrogen.

Answer

To answer the question "An organic compound must contain," we can follow these steps:

### Step-by-Step Solution:

1. **Define Organic Compounds**:
- Organic compounds are primarily defined as compounds that contain carbon atoms.

2. **Identify the Key Elements**:
- The essential elements in organic compounds are carbon (C) and hydrogen (H).

3. **Consider Heteroatoms**:
- While carbon and hydrogen are the main components, organic compounds can also include other elements known as heteroatoms, such as oxygen (O), nitrogen (N), sulfur (S), and halogens (F, Cl, Br, I).

4. **Example of an Organic Compound**:
- For instance, butane (C4H10) is an organic compound that consists of carbon and hydrogen. Its structure can be represented as CH3-CH2-CH2-CH3.

5. **Conclusion**:
- Therefore, the compulsory element that must be present in any organic compound is carbon.

### Final Answer:
An organic compound must contain carbon.

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