Answer:
Option D
Step-by-step explanation:
Small, non polar and uncharged particles moves across the membrane by the process of simple diffusion in order move in and out of the cell
These substances includes,carbon dioxide, oxygen, ethanol, water, urea et cetera.
The large polar and charged molecules such as carbohydrates, fats, protein and ions cannot freely diffuse through the membrane and are transported by the help of carrier protein as they are too large.
Hence, the correct answer is option D