Which statement about sound and animation in Steamboat Willie, Gallopin' Gaucho, and Plane Crazy is true?

• A. In Plane Crazy and Gallopin' Gaucho, there is no fusion between sound and pictures
• B. All three shorts featured perfect synchronization between sound and image
• C. Steamboat Willie had no synchronized sound
• D. Plane Crazy had a fully synchronized soundtrack

Answer: (A)

The main idea here is how tightly sound and picture were tied together in early cartoons. Steamboat Willie is famous for its fully synchronized soundtrack—music, sound effects, and even some dialogue are timed precisely to the on‑screen actions. That level of fusion set a new standard for animation sound.

Plane Crazy and Gallopin’ Gaucho came from the same period, but they didn’t achieve that same integration. Plane Crazy was produced without sound and released later with sound in ways that didn’t sync as tightly to the animation, and Gallopin’ Gaucho also did not reach the same synchronized level as Steamboat Willie. So the statement that Plane Crazy and Gallopin’ Gaucho had no fusion between sound and pictures reflects the lack of that precise synchronization that Steamboat Willie achieved.

The other options are off: not all three had perfect synchronization, Steamboat Willie did have synchronized sound, and Plane Crazy did not have a fully synchronized soundtrack.