The answer is A: The rough ER has visible ribosomes.
The production of gemmae is a widespread means of asexual reproduction in both liverworts and mosses. In liverworts such as Marchantia, the flattened plant body or thallus is a haploid gametophyte with gemma cups scattered about its upper surface. The gemma cups are cup-like structures containing gemmae.
Hypertonic solutions cause water to diffuse out of the cell. This occurs because the concentration of starch is inside the cell is smaller compared to the ammount outside of the cell.
Pull of gravity by the moon.