The direction where the water molecules will move across the membrane is C. Water will move from b to a.
It should be noted that water moves from the side of the membrane where there's lower osmolarity and where there's more water to the region where there's higher osmolarity and less water.
From the correct question, it should be noted that since there's more water in B, then the direction where the water molecules will move across the membrane will be from b to a.
Read related link on:
https://brainly.com/question/12188714