In plants, water supply is due to

If the solute concentration is high and water potential is low then water moves from soil to root xylem. This process is known as osmosis. Guttation basically the loss of water in the form of liquid drops from the plants. Imbibition is the phenomena of adsorption of water from solid particle surface without forming the solution. Adhesion force is the force that helps to stick water to the surface of the cell and thus pull water from stem to leaves

So, the correct answer is 'Osmosis'