Which of the following is a default value of the frame rate (in Flash) that is…

Concept

Frame rate (frames per second, fps) is the number of still images shown per second in an animation or video. Very low frame rates tend to show more visible frame-to-frame stepping, while the historical film-industry rate of 24 fps became the documented convention that authoring and broadcast tools commonly default new content to for reliably fluid-looking motion.

Application

Adobe Flash follows this documented industry convention: Flash Professional’s official reference documentation records that a new Flash document is set, by default, to a frame rate of 24 frames per second — matching the historical motion-picture rate.

Cross-check

• 30 frames/second is the frame rate documented for NTSC-style broadcast video — a different reference convention from Flash’s own new-document setting.

• 10 frames/second and 15 frames/second both fall well under the motion-picture-rate range; rates this low are more prone to visible frame-to-frame stepping.

• 24 frames/second is the value Flash’s own reference documentation records as the new-document default, matching the historical motion-picture convention.

Result: the default frame rate used for smooth animation is 24 frames/second.