The correct economic sustainability indicator from the options provided is the rate of materials flow. This metric assesses how resources are managed within an economy and helps determine its long-term sustainability. Other options focus more on specific aspects of the economy rather than overall sustainability. ;
The chosen economic sustainability indicator is the rate of materials flow. This metric evaluates how effectively resources are used in an economy, which is essential for long-term sustainability. The other options are not directly related to economic sustainability.
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