Correct option:(4) Zero
Solution:
By convention, the water potential of pure water at standard temperature, which is not under any pressure is taken to be zero.
The water potential of pure water is (1) Less than zero (2) More than zero but less than one (3) More than one (4) Zero
The water potential of pure water is (1) Less than zero (2) More than zero but less than one (3) More than one (4) Zero