Answer: (A) Erosion
Step-by-step explanation:
The mechanical weathering is one of the process in which the rocks are breaking down into the different fragments by using the physical forces and the main cause of the mechanical weathering is temperature.
According to the given question, the mechanical weathering process is also known as erosion and it is mainly caused by various types of natural occurring process such as rocks, winds and also due too the expanding process.
Therefore, Option (A) is correct answer.