Question

this marks the end of the first stage of labor. the cervix is fully dilated to a size of 4 inches and the babys head slips out of the uterus and into the birth canal. transition stage 3 labor dilation contractions

Explanation:

Labor has stages. The first stage ends with transition. Transition means cervix is fully dilated (4 inches here) and baby's head moves to birth canal. Stage 3 is after birth. Dilation is part of first - stage process but transition marks the end. Contractions happen throughout labor.

Answer:

transition