Which statement correctly describes virtual water as a concept?

• A. It accounts for water embedded in traded goods.
• B. It measures rainfall in the exporting region.
• C. It tracks groundwater extraction only within a country.
• D. It is identical to per capita freshwater availability.

Answer: (D)

Virtual water is the amount of freshwater used to produce goods and services, which becomes embedded in those goods and travels with them in trade. The statement about virtual water accounts for water embedded in traded goods correctly captures this idea: the water used in production in one place effectively moves with the product when it’s sold to another region.

This isn’t about rainfall in the exporting region, nor about tracking groundwater withdrawals within a country, nor about per capita freshwater availability. Rainfall data describes precipitation, groundwater tracking focuses on local withdrawals, and per capita freshwater availability is a measure of a country’s renewable water resources per person, not the hidden water embedded in traded goods.