During single-rescuer adult CPR, what is the proper ratio of compressions to ventilation?

a. 30 compressions for every breath
b. 30 compressions for every two breaths
c. 5 compressions for every breath
d. 5 compressions for every two breaths

ANS: B
When performing CPR alone, the lay rescuer must remember to give only 30 compressions for adults, children, and infants until an automatic external defibrillator arrives.