Which geologic processes did James Hutton observe in developing the principle of uniformitarianism? A. volcanism and earthquakes B. glaciation and erosion C. erosion and deposition D. volcanism and deposition

The right answer for the question that is being asked and shown above is that: "D. volcanism and deposition." The geologic processes did James Hutton observe in developing the principle of uniformitarianism is the volcanism and deposition