Assertion: Kidneys are retroperitoneal in position.
Reason: Kidneys are covered with peritoneum only on ventral surface.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertin, then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertin, then mark (2)
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertin and Reason are false statements, then mark (4)

Answer

To solve the assertion and reason question regarding the position of the kidneys and their relationship with the peritoneum, we can break it down into the following steps:

### Step 1: Understand the Assertion
The assertion states that "Kidneys are retroperitoneal in position."
- **Explanation**: The term "retroperitoneal" refers to the anatomical location of the kidneys. It means that the kidneys are located behind the peritoneum, which is the membrane lining the abdominal cavity. This is a true statement.

### Step 2: Understand the Reason
The reason states that "Kidneys are covered with peritoneum only on the ventral surface."
- **Explanation**: This statement is also true. The kidneys are indeed covered by the peritoneum on their ventral (anterior) surface, while their dorsal (posterior) surface is not covered by this membrane. This anatomical arrangement supports the assertion that the kidneys are retroperitoneal.

### Step 3: Analyze the Relationship
Now, we need to determine if the reason correctly explains the assertion.
- **Explanation**: The reason provided does correctly explain the assertion. The fact that the kidneys are covered by the peritoneum only on the ventral surface is what defines their retroperitoneal position.

### Step 4: Conclusion
Based on the analysis:
- Both the assertion and the reason are true.
- The reason is a correct explanation of the assertion.

Thus, the answer to the question is that both the assertion and the reason are true, and the reason correctly explains the assertion.

### Final Answer
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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