I think the correct answer from the choices listed above is option A. The Great Dividing Range, running just inland along Australia's eastern coast, is that continent's only <span>significant mountain chain. It is also called as the Eastern Highlands. Hope this answers the question.</span>
Superposition is the geologic principle which explains why the bottom stratum in a section of rock is the oldest. The word literally means placing one thing on top of another where the lower strata are the older.
