Both pulmonary and renal arteries are common regarding :-

Options

A. Contain oxygenated blood
B. Have internal valves
C. Deliver carbon dioxide to the related organs
D. Have thick walls and narrow lumen

Answer

To determine what is common between the pulmonary and renal arteries, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding the Function of Arteries**:
- Arteries are blood vessels that carry blood away from the heart. Typically, they carry oxygenated blood, except for the pulmonary artery, which carries deoxygenated blood to the lungs.

2. **Analyzing Each Option**:
- **Option A: Contains oxygenated blood**:
- This is not true for both arteries. The pulmonary artery carries deoxygenated blood, while the renal artery carries oxygenated blood from the heart to the kidneys. Therefore, this option is incorrect.

- **Option B: Have internal valves**:
- Valves are typically present in veins to prevent backflow of blood. Arteries, including the pulmonary and renal arteries, do not have valves. Therefore, this option is also incorrect.

- **Option C: Deliver carbon dioxide to the related organs**:
- The pulmonary artery carries deoxygenated blood, which is rich in carbon dioxide, to the lungs for gas exchange. However, the renal artery does not deliver carbon dioxide; it supplies oxygenated blood to the kidneys. Thus, this option is incorrect.

- **Option D: Have thick walls and narrow lumen**:
- Both the pulmonary and renal arteries have thick muscular walls to withstand high pressure from the heart's pumping action. They also have a relatively narrow lumen compared to veins. This option is correct.

3. **Conclusion**:
- The commonality between the pulmonary and renal arteries is that they both have thick walls and narrow lumens. Therefore, the correct answer is **Option D**.

### Final Answer:
Both pulmonary and renal arteries are common regarding having thick walls and narrow lumen.

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