题目解析:
readily: 轻而易举地。和选项 B 呼应。对应原文 Exhibitors, however, wanted to maximize their profits, which they could do more readily by projecting a handful of films to hundreds of customers at a time (rather than one at a time) and by charging 25 to 50 cents admission.从这句话可以知道,播放者想要利益最大化,这个可以更加 readily 做到,通过一次对几百个观众播放很多电影。从语境中可以推断 readily 应该是容易的意思,其他选项代入都不合理。