Which of the following is not considered a water conservation measure?

The correct answer is based on the understanding that fertilizing plants does not directly contribute to water conservation. Water conservation measures are actions or practices aimed specifically at reducing water usage or maximizing the efficiency of water use.

Using drip irrigation is a water conservation measure because it delivers water directly to the roots of plants, minimizing evaporation and runoff. Collecting rainwater is also a clear conservation practice; it allows for the harvesting of rain that can be used later for irrigation or other non-potable purposes, reducing reliance on municipal water supplies. Implementing xeriscaping involves designing landscapes that require minimal irrigation, often using drought-resistant plants that thrive in local climates, which also contributes to overall water conservation.

In contrast, while fertilizing plants promotes their growth and health, it does not inherently involve saving or conserving water. Therefore, it does not fit the definition of a water conservation measure, making it the correct answer in this context.