You respond to the scene of a 4-year-old female patient in cardiac arrest. cpr is in progress. what is the most likely cause of the cardiac arrest?

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.

just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project