What factor primarily determines the economic extractability of reserves?

• A. Current technology and price levels
• B. Color of coal
• C. Geography alone
• D. Environmental laws

Answer: (A)

The main driver is the balance between cost and revenue under current technology and market prices. Technology determines what can be mined and at what cost—advances can lower costs, improve recovery, or unlock deposits previously considered uneconomic. Price levels determine how much revenue is obtained from selling the resource; when prices are high enough to cover the extraction and processing costs, a reserve becomes economically extractable, and when prices fall, it may no longer be viable. Geography and environmental laws influence costs and feasibility, but they don’t by themselves decide economic extractability—the essential factor is whether the current technology and price levels make extraction profitable. The color of coal has no impact on this profitability calculation.