The correct option is A Chresard
Hollard is the total water present in the field. Out of this water, the water available to the plants (usually the capillary water) is called chresard. Echard is the amount of water, which is usually not available to the plants. Whereas gravitational water is the water which has entered the water table under the influence of gravity and hygroscopic water is the water that presents in a thin film around soil particles and is not available to plants. Thus, the correct answer is the option A.