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easy · LSAT Logical Reasoning

At a large firm, employees who eat lunch at their desks are, on average, more productive during the afternoon than employees who leave the building for lunch. A consultant concluded that eating lunch at one's desk boosts afternoon productivity.

Which one of the following, if true, most strengthens the consultant's conclusion?

  1. Lunches eaten at one's desk are usually less expensive than lunches eaten out.
  2. The firm's most ambitious employees tend both to eat at their desks and to work intensely throughout the day.
  3. Desk-lunch employees are assigned substantially lighter afternoon workloads than employees who leave the building, because managers reserve the more complex assignments for employees who leave the building at lunch.
  4. Employees who eat at their desks report feeling slightly more rushed than those who leave the building.
  5. Among employees equally ambitious about firm advancement, those eating at desks are still more productive during afternoons.

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