The correct answer is: A. Rice, maize, millet, wheat, mustard
Arunachal Pradesh is a state in northeastern India. It is the largest state in the country by area, but has the lowest population density. The state is home to a diverse range of ethnic groups, each with its own unique culture and traditions.
The main crops of Arunachal Pradesh are rice, maize, millet, wheat, and mustard. Rice is the most important crop, and is grown in the valleys and foothills of the state. Maize is also grown in the valleys, and is used to make a variety of dishes, including bread, porridge, and dumplings. Millet is grown in the hills, and is used to make a type of flour that is used to make bread and other baked goods. Wheat is grown in the higher elevations, and is used to make bread, pasta, and other baked goods. Mustard is grown in the hills and valleys, and is used to make oil, mustard seeds, and mustard greens.
The other options are incorrect because they do not include rice, which is the most important crop of Arunachal Pradesh.