What type of mathematical results would you expect from the experiment you designed above if the two populations diverged only recently?

Only answer if you know the real answer plz. I don't want to have to do any reporting.

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.

what are the options

the scientific method.