Prior to the industrial revolution, scholars believed that the Earth was only 6,000 years old. What evidence first suggested that this might not be the case?

A)Scientists developed techniques to accurately determine the age of fossils.
B)Researchers saw bacteria undergoing natural selection at a rapid rate in the laboratory.
C)Geological studies showed that the slow action of rivers, glaciers, earthquakes, and volcanoes shape the Earth's surface over long periods of time.
D)Scholars observed that new species could evolve rapidly through artificial selection.