Which feature in camels allows them to walk easily on sand?

Options

A. Long legs
B. Hairy feet
C. Broad feet
D. Sharp claws

Answer

### Step-by-Step Solution:

1. **Understanding the Problem**: We need to identify which feature of camels helps them walk easily on sand. The key aspect to consider is how pressure affects their movement on sandy surfaces.

2. **Concept of Pressure**: Pressure is defined as the force applied per unit area. The formula for pressure is:
\[ \text{Pressure} = \frac{\text{Force}}{\text{Area}} \]
This means that if the area increases while the force remains constant, the pressure decreases.

3. **Weight of the Camel**: The force exerted by the camel on the sand is equal to its weight. Camels cannot change their weight, but they can influence the pressure they exert on the sand.

4. **Increasing the Area**: To reduce the pressure on the sand, camels can increase the area of their feet. A larger area means that the same weight (force) is distributed over a larger surface, resulting in lower pressure.

5. **Camel's Feet Structure**: Camels have broad, flat feet. This broad structure increases the surface area in contact with the sand, thus reducing the pressure exerted on it.

6. **Conclusion**: The feature that allows camels to walk easily on sand is their broad feet, which help distribute their weight over a larger area, minimizing the pressure on the sandy surface.

### Final Answer:
The feature in camels that allows them to walk easily on sand is their **broad feet**.

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