Question

the first stage of labor and delivery is called the _______ stage.
expulsion
dilation
placenal
effacement

Explanation:

Labor and delivery has three stages. The first stage is the dilation stage, where the cervix dilates to allow the baby to pass through. Expulsion is the second stage (pushing the baby out), placental is the third (delivering the placenta), and effacement (cervix thinning) occurs during dilation but is not a standalone stage name for the first stage of labor and delivery.

Answer:

dilation