medium · GMAT Verbal
Argument: A law firm started allowing its attorneys to work from home two days a week. Six months later, the firm's total billable hours had increased by 5%. Thus, the work-from-home policy increased the productivity of the attorneys.
Which of the following is an assumption required by the argument?
- The firm did not hire additional attorneys during the six-month period following the implementation of the policy.
- Working from home is only effective for senior attorneys who require less supervision than junior associates.
- The attorneys spent fewer hours commuting once the work-from-home policy took effect.
- The firm's clients are just as satisfied with the work performed at home as they are with work performed in the office.
- Attorneys are more likely to work longer hours when they do not have to spend time commuting to the office.
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