Which statement best describes factors affecting average water use?

Which statement best describes factors affecting average water use?

• A. The molecular formula for water is HO2.
• B. Groundwater is located above the earth's surface and tapped by wells.
• C. Average water use depends on temperature, rainfall, cost, supply, and economic level.
• D. Surface water prior to treatment is called fresh water.

Answer: (C)

What drives average water use is how weather, price signals, and water supply interact with people's ability to pay and their routines. When temperatures are high and it’s dry, outdoor watering, cooling, and even indoor use rise, increasing overall consumption. More rainfall usually reduces outdoor irrigation demand. The cost or price of water influences decisions—higher prices encourage conservation and can lead people to install efficient fixtures or adopt water-saving habits. The reliability and amount of available supply shape how much people use; a plentiful, dependable supply can support higher usage, while a constrained or uncertain supply tends to curb consumption. Economic level affects access to appliances, irrigation systems, and housing conditions, all of which influence average water use. The other statements don’t address what drives how much water is used. One gives an incorrect chemical formula, another incorrectly places groundwater above the surface, and another uses terminology that doesn’t define how much water is used on average.

What drives average water use is how weather, price signals, and water supply interact with people's ability to pay and their routines. When temperatures are high and it’s dry, outdoor watering, cooling, and even indoor use rise, increasing overall consumption. More rainfall usually reduces outdoor irrigation demand. The cost or price of water influences decisions—higher prices encourage conservation and can lead people to install efficient fixtures or adopt water-saving habits. The reliability and amount of available supply shape how much people use; a plentiful, dependable supply can support higher usage, while a constrained or uncertain supply tends to curb consumption. Economic level affects access to appliances, irrigation systems, and housing conditions, all of which influence average water use.

The other statements don’t address what drives how much water is used. One gives an incorrect chemical formula, another incorrectly places groundwater above the surface, and another uses terminology that doesn’t define how much water is used on average.