The situation that most likely would cause the liquid in Tube A to rise is water passing from the region of lower starch concentration to one of higher concentration.
From the illustration, Tube A has a higher starch concentration and, thus, lower water potential as compared to Tube B. Hence, water will spontaneously move from tube B through the dialysis membrane to Tube A by osmosis.
Osmosis is a phenomenon in which water molecules move from the region of high water concentration (high water potential) to the region of low water concentration (low water potential). It is only by doing so that the level of liquid in Tube A can rise.
More on osmosis can be found here: https://brainly.com/question/21395644
