Final answer:
The immediate care for a newborn who is not breathing after delivery should be done in the order of suctioning, stimulating by slapping the feet, and then providing mouth-to-mask ventilation.
Step-by-step explanation:
Immediately following delivery, the correct order to care for a newborn who is NOT breathing is b) Suction; stimulate by slapping feet; mouth-to-mask ventilation.
Suctioning is done to clear mucus from the newborn's airway. Then, stimulating the baby by gently slapping the soles of their feet helps to initiate a response. Finally, mouth-to-mask ventilation is performed to deliver oxygen to the baby's lungs.