TOEFL Reading: ETS-TOEFL阅读机经 - 70F3CUFT37K4TGK3L$

According to paragraph 2, the fact that more people lived in European cities meant that A. more people had to purchase food and other basic necessities rather than producing these things themselves B. industrial output increased because more people were available for employment in manufacturing C. fewer people were available for agricultural work and thus farmers were forced to pay higher wages D. more people competed for full-time urban employment, driving wages down