If your doctor wanted to see how a specific organ was functioning, they would order a(n)

pet scan; this exam best shows organ function
mri; you can see function of all organs with an mri exam
ct; this is the best imaging procedure to demonstrate organ size
ultrasound; you can see movement

PET would be the best option as I shows function although CT scans can also show function

PET scan

Explanation: this exam best shows organ function

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.