Which of the following is an example of proper movement for a biceps curl? a) rotate the arm at the shoulder with the back straight b) bend the arm at the elbow with the back straight c) rotate the elbow and arch the back d) bend the elbow and move the upper arm forward

when in a crucial situation, after calling 911, the correct posture for delivering effective compression is the proper hand placement.

first, place two fingers at the sternum, then put the heel of your other hand next to the fingers and place hand on top of the other. lock your elbows by using your body’s weight and compress the victim’s chest with a depth of 2 inches.

moreover, do 15 compression and 2 breaths, this process must be done four times until there is a pulse or a arrive.