What controll osmosis?
I’m not entirely sure what you mean by what ‘controls’ osmosis, but osmosis is the movement of water from an area of low concentration to an area of high concentration through a semi permeable membrane. So if you had a low concentration sugar solution in one half of a jar and a high concentration sugar solution in the other half of the jar and they were separated by a membrane that water could travel through, a semi-permeable membrane, the water would go from the side where there’s lots of water (low concentration sugar) to the area where there’s not so much water (high concentration sugar) until the sides are the same concentration.
