Concept:Weathering is the breakdown of rocks in place, without being transported.
Explanation:Rocks are weakened and broken down by physical, chemical, or biological agents.
In weathering, the broken pieces stay at or near their original position.
If the broken materials are carried away, the process is called erosion.
Denudation is a broad term that includes both weathering and erosion.
Therefore, the process described here is weathering.
Answer:C. weathering