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.

this doesn't support enough information to answer the question.

i feel as if they would both catch on before to long because they would see them to frequent