Which of the following organic materials damage DNA of our body ?

Options

A. Tobacco
B. Coal
C. Petroleum
D. All of the above

Explanation

To determine which organic materials damage the DNA of our body, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Analyze Option A: Tobacco**
- Tobacco contains a mixture of many chemicals, including at least 60 known carcinogens (cancer-causing substances).
- Smoking or consuming tobacco can lead to cellular damage and increases the risk of cancer.
- The carcinogenic chemicals in tobacco can cause mutations in tissues, leading to DNA damage.
- **Conclusion:** Tobacco can damage DNA.

2. **Analyze Option B: Coal**
- Coal is primarily a solid fossil fuel composed mainly of carbon, with some hydrogen, sulfur, oxygen, and nitrogen compounds.
- The combustion of coal can induce oxidative stress and promote inflammation in the body.
- Both oxidative stress and inflammation can lead to DNA damage.
- **Conclusion:** Coal can damage DNA.

3. **Analyze Option C: Petroleum**
- Petroleum, which includes crude oil, can cause various health issues such as dizziness, headaches, and respiratory problems.
- The exposure to petroleum can lead to damage in multiple body systems, which can also affect DNA integrity.
- **Conclusion:** Petroleum can damage DNA.

4. **Analyze Option D: All of the Above**
- Since we have established that tobacco, coal, and petroleum can all lead to DNA damage, option D, which states "All of the above," is correct.
- **Conclusion:** All of the above options can damage DNA.

### Final Answer:
The correct answer is **D: All of the above**.

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