A team of efficiency consultant conducted a study of company x and found that 85% of its employees suffered a "midafternoon slump" between the hours of 2:00 pm and 4:00 pm. during this slump, each employee's productivity went down an average of 30%. the consultants recommended, therefore, that management institute a policy encouraging employees to take their lunch breaks sometime between the hours of 2:00 pm and 4:00 pm, since employees do not need to be productive as they eat lunch.

The consultant's conclusion relies on which of the following assumptions?

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the consultants found no correlation between consumption of food and the feelings of lethargy experienced by the employees of company x during the midafternoon slump.

Correct

some of the employees of company x do not eat breakfast until they arrive at the office at 9:00 am.

the consultants had seen the same slump phenomenon at company p, and had made the same recommendation to change the lunch hour.

most of the employees of company x expressed a preference to each lunch sometime between the hours of 1:00 pm and 3:00 pm.

the consultant also suggested adjusting the work schedules of half of the employees of company x so that they would come in early in the morning and leave by 2:00 pm.

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What this question tests

What it tests

Whether you can identify the unstated assumption a critical-reasoning argument depends on.

Common trap

Picking an option that strengthens the argument or is merely relevant instead of one that is required.