The correct answer is: d) All of the above
The British were interested in Arunachal Pradesh for a number of reasons, including strategic concerns about Tibet and China, exploitation of natural resources, and expansion of tea plantations.
Arunachal Pradesh is located in the eastern Himalayas, on the border between India and China. The region is strategically important to both countries, as it controls access to the Tibetan plateau. The British were concerned that if China gained control of Arunachal Pradesh, it would be able to use the region to threaten British interests in India.
Arunachal Pradesh is also rich in natural resources, including timber, minerals, and oil. The British were interested in exploiting these resources for their own economic benefit.
Finally, the British were interested in expanding their tea plantations in Arunachal Pradesh. Tea was a valuable commodity, and the British wanted to increase their production of it.
All of these factors contributed to the British interest in Arunachal Pradesh.