00:00

Question 27·Hard·Words in Context

Much of the initial excitement surrounding electric velomobiles stemmed from their promise to enable commuters to traverse long distances without relying on fossil fuels. Yet some early adopters grew disillusioned when manufacturers, aiming to widen the market, ______ the original lightweight designs with heavier, more elaborate models that diminished the vehicles’ efficiency.

Which choice completes the text with the most logical and precise word or phrase?