21. According to the University of Michigan Transportation Research Institute,
there could be a 43 percent drop in ______ of cars.
Key words: University of Michigan Transportation Research Institute, 43 percent
drop, cars
This piece of information is specifically mentioned in paragraph D: “Modelling work by
the University of Michigan Transportation Research Institute suggests automated
vehicles might reduce vehicle ownership by 43 percent, ...”
drop = reduce
cars = vehicles
Thus, the answer here is “ownership”.
→ Answer: ownership
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