Which of the following would be evidence that a volcano has not been active for a long period of time?

Question

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Well-developed soils on volcanic rocks suggest that enough time has passed for weathering and erosion to occur, which would not have happened if the volcano had been active recently. A layer of ash and relatively unweathered lava flows are not necessarily indicative of recent volcanic activity, as they can also be explained by old deposits that have undergone little change over time.

Which of the Following Would Be Evidence That a Volcano