Final answer:
During the active phase of labor, the nurse would assess the fetal heart rate every 30 minutes.
Step-by-step explanation:
During the active phase of labor, the nurse would anticipate assessing the fetal heart rate every 30 minutes (option C).
This frequent assessment allows the nurse to monitor the well-being of the fetus and detect any changes or abnormalities in the heart rate. Regular monitoring is important to ensure the safety and health of both the mother and the baby during labor.