Final answer:
The Indian Act assisted in the assimilation process by abolishing traditional forms of governance, best represented by the division of communal lands and the imposition of individual allotments through the Dawes Act of 1887.
Step-by-step explanation:
The Indian Act contributed to the assimilation of Native Americans into Euro-American society by undermining their traditional communal living and governance.
Among the choices given, the option that most directly relates to this process is A. abolishing traditional forms of governance. This is evident in the Dawes Act of 1887, which aimed to encourage assimilation by dividing communal Native American lands into individual allotments, thereby disrupting traditional tribal organization and lifestyle.
The Act also allowed for the transfer of 'surplus' lands to the federal government, often benefiting white settlers.
Moreover, the policy of removing Native American children from their families to place them in boarding schools like the Carlisle Indian School contributed to this assimilation by forcing them to abandon their tribal traditions and embrace a more Euro-American lifestyle.