Trade-off in resource extraction Steps:

• Identify the context: Low-income countries permit MNC mining for economic gains but face potential downsides.
• Define conflict: A true benefit-cost conflict pairs a positive outcome with a negative one for the host country.
• Evaluate choices: Scan for pairs where one is a benefit (e.g., economic boost) and the other a cost (e.g., depletion).
• Select match: Choose the option showing clear opposition between gain and loss.

Why A is correct:

• Mining exports improve trade balance by increasing foreign exchange earnings, but minerals are finite, leading to irreversible resource depletion per natural resource economics.

Why the others are wrong:

• B: Both higher employment and MNC training are benefits, with no inherent cost or conflict.
• C: MNC profits represent a cost to the host (outflow of value), but efficient production benefits MNCs more than conflicting with host interests.
• D: Sustainable development and economic growth are aligned positives, not a benefit-cost trade-off.

Final answer: A