Within Aboriginal spirituality, which of the following requires ceremonial initiation? (A) Belonging to ritual estate (B) Adoption of language group (C) Transition into adult roles (D) Introduction to totemic group - HSC - SSCE Studies of Religion - Question 4 - 2011 - Paper 1

In Aboriginal spirituality, the significant event that requires ceremonial initiation is the transition into adult roles. This ceremony often marks the passage from childhood to adulthood, and it typically involves various cultural rites that signify the individual's new status and responsibilities within the community.

The other options, while important aspects of Aboriginal culture, do not necessarily require initiation rituals in the same way that adult transitions do. Belonging to a ritual estate, adopting a language group, and introduction to a totemic group may have associated cultural practices but do not require formal initiation.