Which of the following is the correct group of vestigial organs in man?

Options

A. Nictitating membrane , ear muscles , eyelids and coccyx.
B. Appendix ,coccyx, ear muscles and elbow joint
C. Wisdom tooth , coccyx, body hair and ear pinna
D. Wisdom tooth, body hair , nictitating membrane and vermiform appendix

Answer

To determine the correct group of vestigial organs in humans, we need to identify which organs are considered vestigial. Vestigial organs are those that have lost most or all of their original function through the course of evolution.

### Step-by-Step Solution:

1. **Understanding Vestigial Organs**:
- Vestigial organs are remnants of structures that were fully functional in ancestral species but have lost their primary function in modern species.

2. **Identifying the Options**:
- The options provided are:
- Option A: Nictitating membrane, ear muscles, eyelids, coccyx
- Option B: Appendix, coccyx, ear muscles, elbow joint
- Option C: Wisdom tooth, coccyx, body hair, ear pinna
- Option D: Wisdom tooth, body hair, nictitating membrane, vermiform appendix

3. **Evaluating Each Option**:
- **Option A**:
- Nictitating membrane: vestigial
- Ear muscles: vestigial
- Eyelids: not vestigial
- Coccyx: vestigial
- **Conclusion**: Incorrect due to eyelids.

- **Option B**:
- Appendix: vestigial
- Coccyx: vestigial
- Ear muscles: vestigial
- Elbow joint: not vestigial
- **Conclusion**: Incorrect due to elbow joint.

- **Option C**:
- Wisdom tooth: vestigial
- Coccyx: vestigial
- Body hair: vestigial
- Ear pinna: not vestigial (muscles are vestigial)
- **Conclusion**: Incorrect due to ear pinna.

- **Option D**:
- Wisdom tooth: vestigial
- Body hair: vestigial
- Nictitating membrane: vestigial
- Vermiform appendix: vestigial
- **Conclusion**: Correct as all listed are vestigial organs.

4. **Final Answer**:
- The correct group of vestigial organs in man is **Option D: Wisdom tooth, body hair, nictitating membrane, and vermiform appendix**.