A patient is undergoing chemotherapy to treat stage 3 breast cancer. After several chemotherapy tratments the patient cuts them selves and
the wound does not heal well, why?

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.

the answer you are looking for is the united states forest service.

hope this !