The first stage of childbirth

A) usually lasts one to two hours.
B) consists of dilation or widening of the cervix.
C) includes contractions that are continuous.
D) is the shortest of the stages of birth.

First Stage

The initial phase of a process or an event, often setting the foundation for what follows.

Childbirth

The process by which a baby is born, marking the end of pregnancy and involving labor, the delivery of the baby, and the expulsion of the placenta.

Cervix Dilation

The opening of the cervix during childbirth, measured in centimeters from 0 (closed) to 10 (fully dilated), to allow for the passage of the baby.