The correct answer is: All of the above.
Horse-drawn carts, bullock carts, and country boats are all traditional modes of transport used in some parts of Manipur.
Horse-drawn carts are a common sight in rural areas of Manipur. They are used for transporting goods and people, and are also a popular mode of transportation for tourists.
Bullock carts are another traditional mode of transport in Manipur. They are used for transporting goods and people, and are also used for plowing fields.
Country boats are a common sight on the rivers of Manipur. They are used for transporting goods and people, and are also used for fishing.
All of these traditional modes of transport are an important part of the culture and history of Manipur.