Question

Which of the following is (are) NOT the causes of wasteful and unsustainable water use?

• A. A and B Only
• B. B Only
• C. C and D Only
• D. D Only

Hint:

Drip irrigation saves water, while leaky systems, wasteful field application, and unsuitable thirsty crops increase water wastage.

Answer 1

The Correct Option is B

Concept: Wasteful and unsustainable water use occurs when water is lost, overused, or used inefficiently. In agriculture, irrigation method and crop choice strongly affect water consumption.

Step 1: Check causes of wasteful water use.
Leaky irrigation systems waste water because water is lost before reaching crops. \[ A = \text{Cause of water wastage} \] Wasteful field application methods also cause water loss through runoff, evaporation, and over-irrigation. \[ C = \text{Cause of water wastage} \] Cultivation of thirsty crops in unsuitable environments increases water demand and causes unsustainable water use. \[ D = \text{Cause of unsustainable water use} \]

Step 2: Identify what is not a cause.
Drip irrigation system is a water-saving method. It delivers water directly to the root zone of plants and reduces wastage. \[ B = \text{Water-saving method} \] Therefore, drip irrigation system is not a cause of wasteful and unsustainable water use.