The correct answer is: d) Yaks and mithun.
Yaks and mithun are the most common livestock reared in Arunachal Pradesh. Yaks are large, hairy cattle that are well-adapted to the cold climate of the Himalayas. They are used for their meat, milk, and wool. Mithun are a type of wild cattle that are found in the forests of Arunachal Pradesh. They are also used for their meat, milk, and hides.
Cattle and buffaloes are also reared in Arunachal Pradesh, but they are not as common as yaks and mithun. Sheep and goats are also found in the state, but they are not as common as cattle and buffaloes. Pigs and poultry are not commonly reared in Arunachal Pradesh.
The following are some of the reasons why yaks and mithun are the most common livestock reared in Arunachal Pradesh:
- Yaks and mithun are well-adapted to the cold climate of the Himalayas.
- Yaks and mithun are able to survive on the sparse vegetation that is found in the mountains.
- Yaks and mithun are able to produce milk and meat, which are important sources of food for the people of Arunachal Pradesh.
- Yaks and mithun are also used for their hides and wool, which are used to make clothing and other items.