Assertion :- ANS is controlled by hypothalamus.
Reason:- Parasympathetic increases the protection of body in adverse atmospheric conditions along with calorie consumption.

Options

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

Answer

To solve the question, we need to analyze the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion:**
- The assertion states that "ANS is controlled by the hypothalamus."
- The Autonomic Nervous System (ANS) is indeed controlled by the hypothalamus, which acts as an integrator for autonomic functions. It receives inputs from various parts of the brain and regulates bodily functions such as heart rate, digestion, and respiratory rate.

2. **Understanding the Reason:**
- The reason states that "Parasympathetic increases the protection of the body in adverse atmospheric conditions along with calorie consumption."
- This statement is misleading. The parasympathetic nervous system is primarily responsible for conserving energy and promoting "rest and digest" activities. It slows down the heart rate and increases digestive activities, which does not align with the idea of increasing protection in adverse conditions or calorie consumption.

3. **Evaluating the Options:**
- **Option 1:** Both assertion and reason are true, and the reason is the correct explanation of the assertion. (Incorrect, as the reason is false.)
- **Option 2:** Both assertion and reason are true, but the reason is not the correct explanation of the assertion. (Incorrect, as the reason is false.)
- **Option 3:** Assertion is true, and reason is false. (Correct, as the assertion is true and the reason is false.)
- **Option 4:** Both assertion and reason are false. (Incorrect, as the assertion is true.)

### Conclusion:
The correct answer is **Option 3: Assertion is true and reason is false.**

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