Final answer:
The four main components of the labor progress are dilation of the cervix, the birth of the baby, the delivery of the afterbirth, and the contractions.
Step-by-step explanation:
During the labor process, there are four main components: dilation of the cervix, the birth of the baby, the delivery of the afterbirth (placenta), and the contractions that accompany each stage. These components are necessary for a successful delivery. For example, the dilation of the cervix allows the baby to pass through the birth canal, while the contractions help move the baby down and out of the uterus. The delivery of the afterbirth completes the labor process.