Because it is a food item to prepare A and B for our body

Introduction:
Nutrients are substances that are essential for growth, development, and maintenance of the body. They provide energy, promote growth and repair, and regulate bodily functions. While proteins, carbohydrates, vitamins, and minerals are all considered nutrients, dal and rice are not.

Explanation:
- Proteins and carbohydrates: Proteins and carbohydrates are macronutrients that provide energy to the body. Proteins are essential for growth, repair, and maintenance of tissues, while carbohydrates are the main source of energy for the body. They are both considered nutrients.

- Vitamins and minerals: Vitamins and minerals are micronutrients that are required in smaller amounts but are essential for various bodily functions. Vitamins are organic compounds that are necessary for normal metabolism, growth, and development. Minerals, on the other hand, are inorganic substances that are essential for the proper functioning of the body. Both vitamins and minerals are considered nutrients.

- Dal and rice: Dal and rice are food items commonly consumed in many parts of the world, especially in South Asia. While they provide energy and some essential nutrients, they are not considered nutrients themselves. Dal is a type of legume that is rich in protein, fiber, and various vitamins and minerals. Rice, on the other hand, is a cereal grain that provides carbohydrates and some minerals. However, they are not categorized as nutrients since they are specific food items rather than essential substances for the body.

- Conclusion: In conclusion, proteins, carbohydrates, vitamins, and minerals are all considered nutrients as they provide essential elements required for the proper functioning of the body. However, dal and rice, although nutritious food items, are not nutrients themselves. They are specific food items that provide energy and various other nutrients but are not essential substances for the body.