Final answer:
The next best step in the management of a normal newborn with an umbilical bulge is to observe and reassess in 24 hours.
Step-by-step explanation:
The next best step in the management of a normal newborn with an umbilical bulge is to observe and reassess in 24 hours. An umbilical bulge, also known as an umbilical hernia, is a common condition in newborns where a part of the intestine protrudes through a weakened area in the abdominal muscles around the navel. In most cases, umbilical hernias resolve on their own without treatment by the time the child is 3 to 4 years old.