Question #N1422

In the early 1900s, the United States saw a surge in the popularity of silent films. While the technology to create "talkies" was in its infancy, silent film directors developed unique techniques to convey emotion and tell stories. One such technique was the use of intertitles, which were text cards shown on screen between scenes that explained dialogue or conveyed the characters’ inner thoughts.

Which of the following choices correctly combines the two sentences at the underlined portion to create a grammatically correct sentence, while also preserving the meaning of the original passage?
A. intertitles, which were text cards shown on screen between scenes that explained dialogue or conveyed the characters’ inner thoughts.
B. intertitles; text cards shown on screen between scenes that explained dialogue or conveyed the characters’ inner thoughts.
C. intertitles—text cards shown on screen between scenes that explained dialogue or conveyed the characters’ inner thoughts.
D. intertitles, text cards shown on screen between scenes that explained dialogue or conveyed the characters’ inner thoughts,