Refers to the program's ability to allow trainees to respond to questions. sophistication of the multimedia interactivity auto pacing self pacing

The answer to this question is Interactivity
in technological context, interactivity refers to a dialog that happens between a human being with a technology.
Due to development of technology that we experience today,many technologies already developed a feature that allow it to detct sounds and cross referencing it to ther data base, allowing to interraction via taking by the consumers.