The sentence would best fit in Blank 2 because it ties together the ideas presented in the paragraph. The paragraph describes the problems in getting back the employees in the office. In the first two lines, the author mentions this problem. The given sentence gives the effect of the problems and hence will occupy the blank 2 . Also, after blank 2 , the author changes the flow of the idea and starts describing the present scenario regarding the steps taken by the companies to face this issue. Thus, the correct option is B.