Passage Summary: Since most people decide what to buy once they're already in the shop, businesses should focus on eye-catching displays inside the store to grab their attention.

Conclusion: Companies should utilize in-store displays to increase their merchandise sales.

Reasoning: Modern shoppers have less time for traditional advertising like coupons or mailers and make the majority of their purchasing decisions while already inside the store.

Analysis: The argument identifies a behavior (deciding what to buy in-store) and proposes a solution (in-store displays). The 'gap' is the assumption that these in-store displays are actually effective at influencing the decisions of these specific 'busy' shoppers. We need an assumption that confirms the displays will catch the attention of people who are otherwise too busy for traditional ads. Look for an answer that establishes this connection between the shoppers' presence in the store and the effectiveness of the displays.