Introduction:
Food items rich in vitamins and minerals are essential for maintaining a healthy body. They play a crucial role in various bodily functions and are necessary for overall well-being. Among the given options, the correct answer is option 'C' - they fight disease and make our bones stronger.

Explanation:
1. Fighting disease:
- Vitamins and minerals are essential for boosting the immune system, which helps our body fight against diseases and infections.
- Different vitamins, such as vitamin C, vitamin A, and vitamin E, have antioxidant properties that protect our cells from damage caused by free radicals.
- Minerals like zinc and selenium are involved in various biochemical processes that support the immune system.

2. Making bones stronger:
- Certain vitamins and minerals, such as calcium, vitamin D, and vitamin K, are crucial for maintaining strong and healthy bones.
- Calcium is necessary for bone formation and density, while vitamin D helps in the absorption of calcium from the diet.
- Vitamin K plays a role in bone mineralization and helps in binding calcium to the bone matrix.

3. Additional benefits:
- Food items rich in vitamins and minerals provide various other benefits to our body.
- They are involved in energy production and metabolism, ensuring that our body gets the necessary fuel to function properly.
- Vitamins and minerals also support the growth and repair of body tissues, including muscles, organs, and blood vessels.
- They contribute to the production of red blood cells, which are responsible for carrying oxygen to different parts of the body.
- Additionally, vitamins and minerals are essential for maintaining healthy skin, hair, and nails.

Conclusion:
In conclusion, food items rich in vitamins and minerals are essential for fighting diseases, making our bones stronger, and supporting overall health. They play a vital role in various bodily functions and should be included in our daily diet to ensure optimal well-being.