A: Muscles of external ears are fully developed in humans.
R: These muscle helps in moving ear pinna in human.

Options

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

Answer

To analyze the assertion and reason provided in the question, we will break down the statements step by step.

### Step 1: Evaluate the Assertion
- **Assertion (A)**: "Muscles of external ears are fully developed in humans."
- In humans, the muscles of the external ear (auricular muscles) are considered vestigial. This means that while they may be present, they are not fully developed or functional as they are in some other animals. Therefore, this assertion is **false**.

### Step 2: Evaluate the Reason
- **Reason (R)**: "These muscles help in moving ear pinna in humans."
- Since the assertion is false and the muscles are vestigial, they do not serve the function of moving the ear pinna in humans. In fact, these muscles do not contribute to ear movement in any significant way today. Thus, this reason is also **false**.

### Step 3: Conclusion
- Since both the assertion and the reason are false, the correct answer is that both statements are false.

### Final Answer
- Both the assertion and reason are false.

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