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What signals the beginning of the third stage of labor?

  1. The onset of contractions

  2. Full dilation of the cervix

  3. Delivery of the fetus

  4. The cervix begins to soften

The correct answer is: Delivery of the fetus

The beginning of the third stage of labor is marked by the delivery of the fetus. This stage follows the second stage, which involves the expulsion of the fetus from the birth canal. Once the fetus is born, the focus shifts to the expulsion of the placenta, which occurs during the third stage. The transition at this point is significant as it indicates the completion of labor in regard to the delivery of the baby, allowing the mother and healthcare team to shift their attention to postpartum care and the management of placental delivery. Understanding the stages of labor is crucial for effective monitoring and care, as each stage has specific physiological changes and needs. Other options, such as the onset of contractions, full dilation of the cervix, and cervical softening, pertain to earlier phases of labor and do not signify the start of the third stage.