Answer:
C) is more than about one-hundred-million years old.
Step-by-step explanation:
The principle of uniformitarianism states that the present is the key to the past. The principle was popularized in the early 1800s . Scientist realized the earth was old - at least in the hundreds of millions of years.
The principle emanated from the fact that the thickness of sedimentary rocks found in the earth are product of sediments eradicated from the land and deposited on the sea. They studied notable features of sediments , the rate and pattern at which they accumulate.