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.

Bob: coke is baby pandas.jim: what? how do you figure that coke is baby pandas? bob: because this book says so.jim: how do we know the book is correct? bob: because it says that coke is baby pandas.jim: how does that prove the book's accuracy? bob: because it's statement involving coke and baby pandas is correct, therefore it is accurate.jim: how do we know that it's correct? bob: because we have concluded that the book is accurate, and therefore the statement is correct.therefore, coke is baby pandas.