Understanding the Missing Link in Economic Chain ArgumentsThis is a classic "logically completes" question that tests your ability to connect economic cause-and-effect relationships. The trap many test-takers fall into is not carefully mapping out the full logical chain.
Step 1: Map the Given ChainThe argument provides:
Central bank raises interest rates → Controls lending/prevents inflation
BUT economists warn: Higher rates → Wider trade surplus (politically sensitive)
Partial explanation: Higher rates → Reduced business investment → [missing piece] → Wider trade surplus
Step 2: Understand Trade Surplus MechanicsTrade Surplus = Exports - Imports
For the surplus to
widen, we need either:
Exports to increase, OR
Imports to decrease
The passage tells us "exports continue to increase at a faster rate than imports" - so exports aren't dropping. This means the mechanism must involve imports being affected.
Step 3: Connect Investment to Trade BalanceWe need to find: How does reduced business investment lead to a wider trade surplus?
Think about what businesses invest in. If businesses have been investing heavily in
imported equipment, then:
Higher rates → Less investment → Less spending on imported equipment → Imports decrease → Trade surplus widens
This is exactly what answer choice (D) provides...
Why Other Choices Fail:(B) suggests exports would decrease - contradicts the economists' warning
(E) explains past conditions, not future effects of higher rates
Key Learning:The critical insight is recognizing that in economic arguments, you must trace the complete causal chain. Many students stop at 'reduced investment' without asking 'investment in what?'
This reveals a powerful framework for handling all economic chain arguments on the GMAT. Get the
step-by-step solution here and learn why answer B is the classic trap and how to avoid it consistently.