What is the primary purpose of using a fetal monitor during labor?
Correct Answer: C
Rationale: The correct answer is C: to monitor maternal vital signs. During labor, monitoring maternal vital signs such as blood pressure, heart rate, and oxygen saturation is crucial to ensure the well-being of both the mother and the baby. Changes in these vital signs can indicate potential complications that may require immediate intervention. Fetal heart rate variability (A) is important but not the primary purpose of using a fetal monitor. Monitoring for fetal distress (B) is indeed important, but the primary purpose is to ensure the mother's health. Assessing the mother's emotional state (D) is not the primary reason for using a fetal monitor during labor.