Which of the following statements best describes the function of a cell membrane? ( WILL MARK BRAINLIEST ) Please help ASAP

A. The cell membrane has many functions, but its primary action is to regulate the movement of materials into and out of the cell

B. The cell membrane has numerous functions, but its primary role is to keep organelles contained within the cell

C. The cell membrane has many functions, but its primary action is to act as a barrier to keep foreign substances from moving into the cell

D. The cell membrane's primary function is to move waste out of the cell

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion