Which of the following is a reason for the decrease in the level of ground water?

The correct option is D. All of the above

Increasing consumption:

• Groundwater depletion most commonly occurs because of the frequent pumping of water from the ground.
• We continuously pump groundwater from aquifers and it does not have enough time to replenish itself.
• Agricultural needs require a large amount of groundwater.

Building concrete roads and buildings:

• Area covered with concrete leads to reduction of seepage of rain water into the ground. This reduces the availability of ground water.

Excessive use of groundwater for irrigation:

• surface water-fed irrigation decreases runoff and water table depth, while groundwater-fed irrigation increases water table depth, and increases or decreases runoff depending on the pumping intensity.

Hence All of the above reasons are correct