The conditions for development of root pressure in plants are

A. low transpiration rates.

B. high soil water potential.

C. high solute concentration in the xylem.

Root pressure is developed in plants, when the soil water potential is high for rapid uptake of water by roots. High solute concentration is maintained in the root xylem due to active uptake of minerals from the soil which lowers the solute as well as water potentials of root xylem. Transpiration rates must be very less compared to water absorption rates to develop the positive hydrostatic pressure known as root pressure in the root xylem.