Select all that apply. a digital portfolio is used to showcase your: opinions experiences skills accomplishments

The answer would be skills and accomplishments

How do we if it is a video and they know your face.

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)