Final answer:
A laboring woman whose membranes have ruptured is at an increased risk for infection.
Step-by-step explanation:
When a laboring woman's membranes have ruptured, she is at an increased risk for infection. This is because the protective barrier of the amniotic sac is now broken, allowing bacteria to enter the uterus and potentially cause an infection. The risk of infection can be minimized through proper care, such as monitoring for signs of infection and administering antibiotics if necessary.