TOEFL Reading: ETS-TOEFL阅读机经 - A157YD86542HBADLL$

According to paragraph 4, what was the most likely relationship between population growth and food cultivation? A. Population growth encouraged the development of food cultivation. B. Population growth was dependent on the development of a varied diet of cultivated foods. C. Successful methods of food cultivation were developed before population growth occurred. D. Food cultivation was more successful in situations where population growth was limited.