Assertion : Cooking food is difficult on hills.
Reason : The boiling point decreases with increase in pressure a) If both assertion and reason are true and reason is the correct explanation of assertion. b) If both assertion and reason are true and reason is not the correct explanation of assertion. c) If assertion is true and reason is false. d) If both assertion and reason are false.

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

Explanation

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

### Step 1: Understand the Assertion
The assertion states: "Cooking food is difficult on hills." This is true because at higher altitudes, the atmospheric pressure is lower, which affects the boiling point of water.

**Hint:** Consider how altitude affects atmospheric pressure and boiling points.

### Step 2: Understand the Reason
The reason states: "The boiling point decreases with increase in pressure." This statement is false. In fact, the boiling point of a liquid increases with an increase in pressure and decreases with a decrease in pressure.

**Hint:** Recall the relationship between pressure and boiling point.

### Step 3: Analyze the Relationship
Now we need to determine whether the reason correctly explains the assertion. Since the assertion is true (cooking is indeed difficult on hills), but the reason is false (boiling point decreases with an increase in pressure), the reason does not correctly explain the assertion.

**Hint:** Think about whether the reason logically supports the assertion.

### Step 4: Conclusion
Based on the analysis:
- The assertion is true.
- The reason is false.

Thus, the correct answer is option **C**: If assertion is true and reason is false.

**Final Answer:** C