Final answer:
Indigenous Australians (Aboriginal Australians) are working to increase their ability to control traditional sacred lands in Australia, due to their ancestral and cultural ties to these lands.
Step-by-step explanation:
The group working to increase its ability to control traditional sacred lands in Australia is A. Indigenous Australians. The Indigenous people, also known as Aboriginal Australians, have historical and cultural connections to their ancestral lands. They have been taking legal and social action to reclaim and protect these lands from exploitation by agricultural and mining operations as stated by legal precedents, although the success of these efforts has been mixed. This struggle for land rights recognizes their spiritual and cultural ties to the land that have existed for tens of thousands of years prior to European colonization.