The model illustrates a process by which a substance is taken up by a cell. Series of four pictures. In the first two pictures, a cell reaches out and engulfs a particle to create a bubble inside the cell. In the third picture, a small gray cell structure fuses with the bubble. In the fourth picture, the particle is greatly reduced in size and is contained an irregularly-shaped structure resulting from the fusion of the cells structure and the bubble. Which statements describe the process? A. The model shows the process of endocytosis. B. The process shown in the model requires energy from the cell. C. The cell membrane in the model remains intact throughout the process. D. The model shows the process of facilitated diffusion.