Final answer:
The umbilical cord is cut during the second stage of childbirth, right after the birth of the baby.
Step-by-step explanation:
The umbilical cord is cut right after birth, in the second stage of childbirth. Once the head of the newborn is birthed, the obstetrician will double-clamp the umbilical cord and make a cut between the clamps. This process usually takes place within seconds of birth.