Final answer:
The best way to maintain the newborn's temperature immediately after birth is to dry the newborn thoroughly, including the hair.
Step-by-step explanation:
The best way to maintain the newborn's temperature immediately after birth is to dry the newborn thoroughly, including the hair. This helps to remove any moisture on the surface of the skin, preventing heat loss. Giving the newborn a bath using warm water may actually cause further heat loss as the water cools down the baby's body temperature. Feeding warmed formula can help provide some warmth, but it is not the most effective method for maintaining temperature. Limiting the length of time that parents hold the newborn is not necessary for temperature regulation.