When doing this exercise your feet need to be flat on the floor and your knees are bent. A)wall sit
B)push up
C)chin up
D)crunch
HELP ASAPPP

Wall sat

Explanation:

A wall sit is an exercise done to strengthen the quadriceps muscles. A similar physical activity, known as the jetliner position, is used as a form of torture. The exercise is characterized by the two right angles formed by the body, one at the hips and one at the knees. The person wall sitting places their back against a wall with their feet shoulder-width apart and a littl…

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.