Final answer:
A newborn infant is called a neonate during the first month after birth. It is a critical time of adjustment as they transition to the outside world.
Step-by-step explanation:
A newborn infant is called a neonate during the first 28 days of life. It refers to a baby from birth until the first month after birth. The neonatal period is a critical time of adjustment for the newborn, as they transition from the protected environment of the womb to the outside world.