What happens in the body when you're studying for a math test? You're reading the problems, writing the answers, getting up to stretch, and talking to a friend on the phone. How are the body systems working together to complete these tasks?

dude are you ok?

explanation:

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.

im 100% sure its all of the above.