Answer:
The correct answer is osmosis
Explanation:
Osmosis is a process through which water moves from an area which is having a low concentration of solute to an area that is having a high solute concentration through a semi-permeable membrane.
As the water or liquid moves down its concentration gradient so energy is not required in this movement. So the high sugar concentration in the phloem causes water to move inside it along the concentration gradient without energy is called osmosis. Osmosis is a form of diffusion.