Answer
read the scientific question below.
"does sunlight make plants live? "
what is a likely hypothesis for the question?

a. yes, sunlight makes plants live.
b. no, sunlight does not make plants grow.
c. if we place a plant in the shade, then it will die.
d. if we place two plants in sunlight, then they will grow differently.

All living things need water and food. Light is nourishment for plants. They use it in a vital process known as photosynthesis, where chloroplasts capture the energy of light, sparking multiple metabolic reactions — one of which creates plant sugars (food).

So your answer would be A. Yes, sunlight helps plants to live

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.