The answer is a) good luck!
Those two are the muscular system and the excretory system because you use your muscles to push up and down and your excretory system produces the sweat you use while doing them
Individualization is discriminating the individual from the genetic group or species
Specificity is the quality of being specific rather than general
Your elbows should be glued to your ribcage as you lift/lower the weight. If you try to bring the bar to your chin, for example your shoulders will begin to move forward (shoulder flexion) and your exercise becomes a bicep-shoulder curl
