What best describes deflation as it relates to earth science?

The lowering of land surface caused by wind best describes deflation as it relates to Earth science.

Deflation, in geology, erosion by wind of loose material from flat areas of dry, uncemented sediments such as those occurring in deserts, dry lake beds, floodplains, and glacial outwash plains.

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To provide water to their crops, these early farmers began to construct well-engineered networks of irrigation canals across the Valley. Unprecedented in size, Hohokam canals often extended to 16 miles or more in length. ... The canals were engineered to keep water flowing through the canals at a constant rate.

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