2-naphthylamine and 4-aminobipyhenyl cause

Options

A. Lung cancer
B. Liver cancer
C. Prostate cancer
D. Urinary bladder cancer

Answer

**Step-by-Step Solution:**

1. **Identify the Compounds**: The question mentions two specific compounds: 2-naphthylamine and 4-aminobiphenyl. Both are known as carcinogens, which means they have the potential to cause cancer.

2. **Understand the Context**: These compounds are often found in certain environments, such as workplaces where they are used or produced, and they are also present in cigarette smoke.

3. **Determine the Type of Cancer**: Research indicates that both 2-naphthylamine and 4-aminobiphenyl are associated with an increased risk of urinary bladder cancer. This is a key point as it helps narrow down the options provided in the question.

4. **Evaluate the Options**:
- **Lung Cancer**: Not associated with these compounds.
- **Liver Cancer**: No direct link established with these carcinogens.
- **Prostate Cancer**: Not caused by these compounds.
- **Urinary Bladder Cancer**: This is the correct association as both compounds are known to increase the risk of this type of cancer.

5. **Conclusion**: Based on the evaluation, the correct answer to the question is that 2-naphthylamine and 4-aminobiphenyl cause urinary bladder cancer.

**Final Answer**: Urinary bladder cancer.

---