Step 1: Understand the StructurePremise 1: Storeowners installed surveillance to prevent cashier theft
Premise 2: Experienced cashiers can bypass the measures
Conclusion: Theft is
unlikely to significantly decreaseStep 2: Spot the GapThe argument jumps from "experienced cashiers CAN bypass" to "theft WON'T decrease."
But wait - just because some cashiers bypass doesn't mean TOTAL theft stays the same!What if most cashiers aren't experienced? What if measures still deter some theft?
Step 3: What Completes the Logic?We need: Bypass +
______ = No net reduction
The blank must show why bypassing the measures
actually keeps theft levels constant.
Step 4: Answer Choice Analysis(A) Operations became more expensive →
Talks about COST, not theft levels. Irrelevant.
(B) Stores without measures lose up to
10% →
Hurts the argument! Suggests measures DO work.
(C) Many thefts are quickly found out → Doesn't connect to why theft won't decrease.
(D) Storeowners stop auditing when measures are installed → PERFECT!(E)
7% of revenue was lost before measures → Just historical data. No logical connection.
Why D Works — The "False Sense of Security" Pattern:• Surveillance installed → Storeowners feel protected
• Feeling protected →
Stop auditing daily earnings
• Experienced cashiers →
Bypass surveillance
• No auditing →
NEW theft opportunityResult: Measures block one door, but complacency opens another. Net theft = unchanged.
Simple Analogy:Installing a fancy front door lock, then leaving the back door wide open because you "feel safe."
Answer: DTakeaway: In "complete the argument" questions, look for
compensating mechanisms — when a solution creates a
new problem that cancels out its benefit. The classic pattern is: Safety measure → Complacency → New vulnerability → No net improvement.