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Question 51·Hard·Text Structure and Purpose

Urban planner Lena Ortiz argues that cities often overestimate the economic benefits of hosting mega-events such as international sport tournaments. She notes that municipal projections typically focus on short-term hotel bookings and ignore long-term maintenance costs for newly built venues. In Montréal, for example, the stadium constructed for the 1976 Summer Games was not paid off until 2006, three decades after the final medal ceremony, and required millions of dollars in annual upkeep during that period. Ortiz concludes that city officials should give more weight to these deferred expenses when deciding whether to submit bids.

Which choice best describes the function of the underlined sentence in the passage?