Why does the mixed pattern need careful planning?

Since more offices began to allow staff to work from home, researchers have studied the effects. Many employees say they save hours of travel time and feel less stressed. Companies have found that, for tasks requiring concentration, productivity often rises. On the other hand, workers at home miss casual conversations that lead to new ideas, and younger staff find it harder to learn from more experienced colleagues. Some firms now ask people to come in two or three days a week. Researchers say this mixed pattern may combine the strengths of both, but it needs careful planning so that colleagues are in the office on the same days.

Answer and explanation

Correct answer: C. Colleagues need to be in the office on the same days

  1. Step 1: The last sentence says colleagues must be in the office on the same days for the pattern to work.
Answer
Colleagues need to be in the office on the same days.
Why not the others: The passage does not say any of the other three.

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