TOEFL Reading: ETS-TOEFL阅读机经 - QEPA55ST_RPV536GL$

Paragraph 6 suggests that markets developed near the residences of kings, nobles, and powerful officials for which of the following reasons A. Nobles and officials made it legal for merchants to sell their goods. B. Merchants could sell their goods in relative safety at these sites. C. Nobles and officials established their residences along traditional trade routes. D. Merchants could sell their goods more easily to wealthy nobles and officials.