The correct answer is (a). The Apatani tribe in the Ziro Valley is known for their wet-rice cultivation. They are an indigenous people of the Indian state of Arunachal Pradesh. The Apatani are known for their unique culture and traditions, including their practice of facial tattooing. They are also known for their wet-rice cultivation, which is a complex and labor-intensive process. The Apatani have developed a number of ingenious methods to adapt to the harsh conditions of the Ziro Valley, including the construction of raised fields and the use of a unique system of irrigation. Their wet-rice cultivation is a testament to their ingenuity and resilience.
Option (b) is incorrect because the Apatani are not a nomadic people. They have a long history of living in the Ziro Valley and have developed a strong connection to their land.
Option (c) is incorrect because the Apatani are not known for their warrior traditions. They are a peaceful people who have traditionally avoided conflict.
Option (d) is incorrect because the Apatani do not have any maritime trade routes. They are an inland people who have traditionally traded with other tribes in the region.