The modem man differs from the apes in

Options

A. Protruding eyes
B. Spare body hair
C. Wearing of clothes
D. Arms shorter than legs

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the differences between modern humans (Homo sapiens) and apes.

2. **Identifying Key Differences**: To answer the question, we need to identify specific physical and anatomical characteristics that distinguish modern humans from apes.

3. **Analyzing the Options**:
- **Protruding Eyes**: Both modern humans and apes have eyes that are positioned in a way that allows for forward vision, but this is not a significant distinguishing feature.
- **Sparse Body Hair**: Humans do have less body hair compared to many apes, but this is not the most defining difference.
- **Wearing of Clothes**: This is a behavioral difference rather than a physical one.
- **Arms Shorter than Legs**: This is a significant anatomical difference. Modern humans are bipedal, meaning they walk on two legs, which has resulted in shorter arms relative to their legs compared to apes, which are more adapted for climbing and have longer arms.

4. **Conclusion**: The most characteristic difference between modern man and apes is that modern humans have arms that are shorter than their legs due to bipedalism.

5. **Final Answer**: The modern man differs from the apes in that his arms are shorter than his legs.