题目选项分析

According to the nineteenth-century schema of a "well-made play,"

all of the happenings on stage are driven by a single discovery, such as that of a letter, and by the series of events, often involving misinterpretations by the characters, that follows from it

According to the nineteenth-century schema of a "well-made play,"

a single discovery, such as that of a letter, drives all of the happenings on stage, and also the series of events, often involving misinterpretations by the characters, that follow from it