Avideo demonstrating a person doing strength training on a gym machine in small steps modifies which construct of hbm?

The video would modify the "self efficacy" construct, because it would demonstrate how the exercise could be done in small steps, possibly convincing someone that he or she can do it, changing the perception of the competence to perform the behaviour in question.

answer; i believe that the correct answer is rapid and subsequently slow down;

well, there are a lot of places we get information about earth from. like science classes, websites, books, newspapers, etc.