Osmosis Defined by Water Movement Steps:

• Identify osmosis as net movement of water across a partially permeable membrane from high to low water potential.
• Evaluate statement 1: Glucose, a solute, cannot pass through a partially permeable membrane, which blocks solutes but allows water.
• Evaluate statement 2: Water molecules move down the water potential gradient, defining osmosis direction.
• Note statement 3 is incomplete, but assuming standard osmosis facts (e.g., requires energy-free diffusion), it aligns with correct options excluding 1.

Why D is correct:

• D selects 2 and 3 only, matching osmosis as water diffusion down water potential without solute passage (statement 1 false).

Why the others are wrong:

• A includes 1, incorrect as solutes like glucose are blocked.
• B includes 1, ignoring membrane selectivity.
• C includes 1 but excludes 2, missing core water potential mechanism.

Final answer: D