Greg was playing tennis with his friend tony. tony suddenly clutched his chest and fell to the ground. tony was shallowly breathing. after calling 911, greg performed chest compressions on tony and waited for the paramedics to arrive. the paramedics were surprised to see greg performing chest compressions on his friend. why were the paramedics most likely surprised?

The answer is B! Greg´s friend was breathing and did not need chest compressions.

Explanation:

The paramedics after arriving were surprised to see Greg performing chest compression on Tony's chest because  Tony was still able to breathe though he was shallow breathing. Chest compression is given to person suffering by cardiac arrest. By giving chest compression, oxygenated blood circulate through the body and keeps the other organs and specially the brain alive for some time until defibrillator is given. Chest compression provides adequate blood flow in the body.

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck