While the influence of British magazines in shaping public opinion predates the nineteenth century, it was during the 1800s that mass distribution became possible and an explosion in periodical readership occurred, vastly increasing magazines’ opinion-shaping powers. The role of magazines as arbiters of nineteenth-century taste is seen in their depictions of the London Theater. The magazines accorded some legitimacy to East End working-class theaters that mirrored the format of the fashionable West End theaters serving middle- and upper-class audiences. However, the magazines also depicted music halls—which competed for patronage with all theaters—as places where crass entertainment corrupted spectators’ taste and morals. Finally, they suggested that popular demand for substandard fare created a market unfriendly to higher expressions of dramatic art.
The author of the passage mentions East End working-class theaters primarily in order to
A. illustrate a point about the ability of magazines to sway public opinion
B. contrast the kinds of entertainment presented in East End and West End theaters
C. make a point about how spectators’ tastes influenced the offerings at different kinds of theaters
D. explain how magazines chose which kinds of entertainment to cover
E. identify factors that helped make certain theaters fashionable
解析：首先简化题干。题干问的是：提到“某件事”的目的是什么?那么，“某件事”的具体内容是什么，立刻想到应该是不太重要的，重点是举例的目的。对应到文章中第二句：“The role of magazines as arbiters of nineteenth-century taste is seen in their depictions of the London Theater. The magazines accorded…”很明显“The role of …”这句话表明了目的 “杂志是19世纪品位的仲裁者”，即杂志体现了19世纪的品味。所以具体例子内容即便看不懂，也可知道，举例是为了论证杂志对19世纪群众的影响力。即选项A。