All organs in the human body perform important functions. Which organ controls all of the other organs and is called the control center of the body?
stomach
B
small intestine
С
brain
D
liver

Well I thought it was the nervous system but that is connected/ made up of the brain so I would go for C, Brain

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.