Tribal communities in Arunachal Pradesh contributed to the freedom movement in ways that included:

The correct answer is: d) All of the above

Tribal communities in Arunachal Pradesh played a significant role in the Indian freedom movement. They resisted colonial encroachment, participated in non-cooperation movements, and safeguarded strategic areas during wartime.

• Resistance to colonial encroachment: The tribal people of Arunachal Pradesh were fiercely independent and resisted British attempts to control their land. They fought against the British in a number of battles, including the Battle of Khonsa in 1894 and the Battle of Sela Pass in 1911.
• Participation in non-cooperation movements: The tribal people of Arunachal Pradesh also participated in the non-cooperation movement and other independence movements. They boycotted British goods and institutions, and they participated in protests and demonstrations.
• Safeguarding strategic areas during wartime: During World War II, the tribal people of Arunachal Pradesh played a key role in safeguarding strategic areas from Japanese invasion. They provided intelligence to the Allied forces and they fought against the Japanese in a number of battles.

The contributions of the tribal people of Arunachal Pradesh to the Indian freedom movement are often overlooked. However, they played a vital role in the struggle for independence. Their resistance to colonial encroachment, participation in non-cooperation movements, and safeguarding strategic areas during wartime were all essential to the success of the Indian freedom movement.