Which description best matches the use of sound in The Jazz Singer (1927) ?

A) all-talkie
B) silent
C) silent-sound hybrid
D) music-only sound-on-film

The Jazz Singer is known as a silent-sound hybrid because it features both synchronized sound (dialogue and singing) and silent film techniques (title cards, intertitles, and visual storytelling). This hybrid approach was used because at the time, the technology for producing synchronized sound films was still developing, and not all theaters were equipped to handle them.