Pick up the correct statement from the following: A. Water table generally follows the ground surface above it with a few exceptions B. Static level of water in an open well indicates the position of the water table C. At water table, hydrostatic pressure is zero D. All the above

The correct answer is D. All the above.

A water table is the upper surface of the zone of saturation, where all pores in the soil are filled with water. The water table generally follows the ground surface above it with a few exceptions, such as where there is a large impermeable layer of rock or clay. The static level of water in an open well indicates the position of the water table. At the water table, hydrostatic pressure is zero.

The water table is important because it is the source of water for wells and springs. It is also important for plants, as they need water to grow. The water table can be affected by human activities, such as pumping water from wells or building dams. This can cause the water table to drop, which can have a negative impact on plants and animals that rely on groundwater.

The water table is also important for the environment. It helps to regulate the climate and prevent flooding. It also provides a habitat for many plants and animals.