7429. The number of aboriginal inhabitants in Australia is considerable.

✅ The correct answer is option A.
Primitive : relating to, denoting, or preserving the character of an early stage in the evolutionary or historical development of something.

Modern : relating to the present or recent times as opposed to the remote past.

Unoriginal : lacking originality; derivative.

Irrational : not logical or reasonable.

Aboriginal : inhabiting or existing in a land from the earliest times or from before the arrival of colonists; indigenous.

Synonym of Aboriginal is Primitive