Assertion : Pavlov has improtant contribution in study of digestion.
Reason : Pavlov discovered that salivation occurs when food is placed in front of us.

Options

A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not correct explanation of A
C. A is true but R is false
D. A and R are false

Answer

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

### Step 1: Understand the Assertion
The assertion states: "Pavlov has an important contribution in the study of digestion."
- Ivan Pavlov is primarily known for his work in physiology, particularly his studies on conditioned reflexes. While his work does touch on aspects of digestion (like salivation), his main contribution is not specifically in the study of digestion itself.

**Hint:** Consider the main focus of Pavlov's research and how it relates to physiology rather than just digestion.

### Step 2: Understand the Reason
The reason states: "Pavlov discovered that salivation occurs when food is placed in front of us."
- This statement is misleading. Pavlov's experiments were conducted with dogs, not humans. He found that dogs salivated in response to stimuli associated with food (like the sound of a bell), not just when food was placed in front of them.

**Hint:** Reflect on the specifics of Pavlov's experiments and the subjects he studied.

### Step 3: Evaluate Both Statements
- The assertion is incorrect because while Pavlov contributed to understanding physiological processes, his work is not primarily about digestion.
- The reason is also incorrect because it inaccurately describes Pavlov's findings, which were based on dogs, not humans.

### Step 4: Conclusion
Since both the assertion and the reason are false, the correct answer is that both the assertion and reason are false.

**Final Answer:** Both assertion and reason are false.