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Read the sentence from paragraph 15.
Over the next 30 years or so, electric vehicles entered a sort of dark ages with little
advancement in the technology.
How does the phrase "dark ages" impact the meaning of the passage?
A. by expressing that electric vehicles began a period of transformation
B. by expressing that electric vehicles failed to fulfill public demand
C. by expressing that the interest in electric vehicles greatly diminished
D. by expressing that the problems facing electric vehicles were resolved

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