The correct answers are A) by making film documentaries, B) by encouraging the use of the didgeridoo, and C) by using boomerangs for recreation.
Indigenous people of Australia and New Zeland are working to revive their traditional cultures by making film documentaries, by encouraging the use of the didgeridoo, and by using boomerangs for recreation.
INdigenous people in New Zeland and Australia represent the base of the history, culture, and tradition of these countries. The government supports the efforts to revive the traditional cultures of these tribes because it's interested in reviving the culture of their nations. By share documentaries or by using musical instruments such as the didgeridoo, and event the boomerang as a recreational device, indigenous people have found ways to remind the people that this region is full of history and traditions.