The picture shows an experimental set up for the process of osmosis. the potato has a cavity on top, as shown in the picture. some sugar solution is poured into the cavity and the potato is placed in a beaker of water. after some time, it is observed that there is a rise in the level of liquid in the cavity. this confirms that a) water from the beaker has moved into the cavity. b) sugar has moved out of the sugar solution in the cavity. c) the sugar solution in the cavity has become more concentrated. d) there is equilibrium between the liquids in the beaker and the cavity.