Introduction:
In this question, we are asked to identify the item that we wear to protect our feet. Let's discuss the correct answer, which is option 'D) Socks'.

Explanation:
Socks are an essential item of clothing that we wear on our feet. They serve several purposes, including protection, comfort, and hygiene.

Protection:
- Socks provide a protective barrier between our feet and the shoes we wear. They help to prevent friction and rubbing, reducing the risk of blisters, calluses, and sores.
- Socks also act as a cushion, absorbing shock and impact while walking or running. This helps to reduce the strain on our feet and joints.

Comfort:
- Wearing socks adds a layer of comfort to our feet. They provide warmth during colder months, keeping our feet cozy and comfortable.
- Socks also help to wick away moisture from our feet, preventing excessive sweating and reducing the chances of developing fungal infections.

Hygiene:
- Socks play a crucial role in maintaining foot hygiene. They act as a barrier, preventing direct contact between our feet and the inside of our shoes.
- By absorbing sweat and moisture, socks help to keep our feet dry, reducing the growth of bacteria and foul odors.
- Regularly changing and washing socks helps to maintain cleanliness and prevent the buildup of dirt and bacteria.

Conclusion:
In conclusion, we wear socks to protect our feet. They provide protection, comfort, and maintain foot hygiene. Wearing socks is essential for maintaining the overall health and well-being of our feet.