Answer:
Form an Airtight seal around the infant's nose and mouth.
Explanation: Forming an Airtight seal around the infant's Nose and mouth is the ideal thing to do but you have to be very careful not to close all of the infant's mouth.
And you start to Perform CPR only after you have called for help or if there is no way to call for help and you have confirmed that the child is not responsive, moving or breathing anymore by either tapping the child or Shouting. Remember that the child's bones and organs are still very fragile so do not shake the child.
