Actualism Is the

Actualism is the

A) idea that the geological record provides a unique perspective on human activities.
B) study of how large meteors have struck the Earth over time and thus caused mass extinctions of life.
C) notion that fundamental physical principles operating today have done so throughout Earth's history.
D) study of ripples in sand made by water and air movements, and how those features are always different from the ones made by water and air long ago.