Which term describes natural resources that have been identified in terms of quantity and quality?

• A. Resources
• B. Re-use
• C. Renewable Resources
• D. Reserves

Answer: (D)

The key idea is identifying how much of a resource exists and how good it is, and whether it can be profitably extracted with current technology and prices. That specificity—knowing the quantity and the quality of the resource and its economic feasibility of extraction—is what the term reserves captures. Reserves describe the portion of a resource that is known and evaluated in terms of how much there is and how suitable it is for extraction under current conditions, making it economically recoverable.

Other terms don’t fit as precisely. Resources is a broader category that includes all known and potential amounts, not necessarily economically extractable or fully characterized. Renewable resources describe whether a resource can replenish over time, not the specifics of quantity and quality. Re-use refers to the practice of using materials again, not to how resources are quantified or classified.

So, the best fit for resources identified in terms of quantity and quality is reserves.