How does the transpiration pull move water up the plant?

How does the transpiration pull move water up the plant?

• A. Water loss from leaves creates negative pressure in the xylem, pulling water upward through capillary action.
• B. Roots actively pump water against gravity.
• C. Water moves by positive hydrostatic pressure generated in shoots.
• D. Water moves only by osmosis through leaf cells.

Answer: (A)