Assertion : Cerebellum has very convoluted surface in order to provide the additional space for many more neurons.
Reason : The medulla oblongata control respiration, cardiovascular reflexes and gastric secretions.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Explanation

To analyze the given question, we will break it down into steps to determine the correctness of the assertion and reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Cerebellum has a very convoluted surface in order to provide the additional space for many more neurons."
- This is true because the cerebellum's convoluted surface (folds and grooves) increases the surface area, allowing for a greater number of neurons to be packed into the limited volume of the brain.

2. **Understanding the Reason**:
- The reason states that "The medulla oblongata controls respiration, cardiovascular reflexes, and gastric secretions."
- This statement is also true. The medulla oblongata is a crucial part of the brainstem that regulates vital autonomic functions, including breathing, heart rate, and digestive processes.

3. **Evaluating the Relationship**:
- Now we need to determine if the reason provided is a correct explanation for the assertion.
- While both statements are true, the reason does not explain why the cerebellum has a convoluted surface. The functions of the medulla oblongata are unrelated to the structural adaptations of the cerebellum.

4. **Conclusion**:
- Both the assertion and reason are true, but the reason does not correctly explain the assertion. Therefore, the correct answer is that both statements are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
Both assertion and reason are true, but the reason is not the correct explanation of the assertion.

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