What does an "incompetent cervix" refer to?

An "incompetent cervix" refers to a condition in which the cervical tissue is weak and unable to support a pregnancy effectively. This weakness can result in the cervix dilating prematurely or opening before the fetus reaches term, which can lead to complications such as miscarriage or premature birth.

In this context, the focus is on how the structural integrity of the cervix plays a critical role in maintaining pregnancy. When the cervix does not remain closed due to its inability to support the weight of the growing fetus, it can fail under pressure, making it crucial for healthcare providers to monitor and manage this condition in pregnant individuals. Typically, treatment may involve monitoring, lifestyle changes, or in some cases, surgical interventions such as a cervical cerclage to help prevent premature birth.

The other options describe conditions that do not accurately reflect the nature of an incompetent cervix. Strong cervical tissue would imply a healthy or effective cervix, while a cervix that has closed tightly indicates no issues present. Therefore, option B appropriately encapsulates the risks associated with an incompetent cervix.