<span>An eon is a geologically around tens of millions of years. A period is a million year included in an eon which is also made up of several eras. Therefore my answer is a period due to it being a subset of an era which is a subset of an eon.</span>
I am pretty sure it is C but correct me if I'm wrong hope this helps.
Answer:
It includes the countries of Bangladesh, Bhutan, India, Pakistan, Nepal, and Sri Lanka; Afghanistan and the Maldives are often considered part of South Asia as well.
when trees and dirt combine i think