hard · LSAT

A research team found that 60 percent of surveyed smartphone users also own a laptop. However, only 30 percent of surveyed laptop users also own a smartphone.

Which one of the following, if true, most helps to explain the discrepancy in these percentages?

  1. The survey included far more laptop users than smartphone users overall.
  2. Smartphones have grown cheaper and more widely available in recent years than laptops.
  3. Laptop users tend to be older and to have more disposable income than smartphone users.
  4. Many people now handle on their smartphones tasks they once performed on laptops.
  5. The survey was conducted online, where smartphone users are easier to reach than laptop users.

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