Read the passage below and answer the question that follows. Sarah is a geologist who studies the effects of erosion. She is trying to figure out the original age and height of a mountain based on how much of the mountain has been eroded. The word underlined in the sentence above can best be defined as . A. sunk due to the movement of the Earth’s plates B. grown slowly in height and width C. transformed into a new object D. worn away slowly Please select the best answer from the choices provided A B C D