Correct Answer: C

Rationale: Endometriosis is associated with an increased risk of developing ovarian cancer due to chronic inflammation and hormonal imbalances. The exact cause is not fully understood, but women with endometriosis should be monitored closely.

Correct Answer: D

Rationale: Blurred vision can be an indicator of serious conditions such as preeclampsia, which involves hypertension and can lead to significant maternal and fetal complications.

Correct Answer: D

Rationale: Calcium is vital during pregnancy for fetal bone development and to prevent maternal bone loss. The recommended daily intake should be increased to support these needs.

Correct Answer: B

Rationale: Moderate tremors of the extremities are a common sign of opioid withdrawal in newborns. Other signs may include irritability, feeding difficulties, and gastrointestinal disturbances.

Correct Answer: A

Rationale: When a client's membranes rupture, there is a risk that the umbilical cord could become compressed, affecting blood flow to the fetus. The nurse's priority action is to assess the fetal heart rate to ensure that the fetus is not in distress.