The correct answer is: All of the above.
Wheat, maize, and rice are all major cereal crops grown in Himachal Pradesh. Wheat is the most important cereal crop in the state, followed by maize and rice. Wheat is grown in the lower hills, while maize and rice are grown in the higher hills.
Wheat is a major source of food for the people of Himachal Pradesh. It is used to make bread, chapatis, and other dishes. Maize is also a major source of food, and it is used to make tortillas, tamales, and other dishes. Rice is not as widely grown as wheat or maize, but it is still an important crop. It is used to make rice dishes such as pulao and biryani.
The cultivation of these crops is important for the economy of Himachal Pradesh. The crops provide employment for many people, and they also generate revenue for the state government. The cultivation of these crops is also important for the environment. The crops help to prevent soil erosion, and they also provide habitat for wildlife.