Q: Answer the following question given this paragraph: Wind blows small particles away. As a result, the ground surface gets lower and rockier; this is called deflation . The rocks that are left are called desert pavement . Desert pavement is a surface covered by gravel-sized particles that are not easily moved by wind. Q: What is the process by which wind blows to make the ground surface gets lower and rockier ? A:

Available options: a). inflation; b). stagnation; c). layering; d). deflation;
A:
d).