Final answer:
During the 2nd stage of labor, fetal monitoring should occur every 30 minutes.
Step-by-step explanation:
The correct answer is B. Every 30 minutes.
During the 2nd stage of labor, fetal monitoring should occur every 30 minutes. This stage is also known as the pushing stage, where the cervix is fully dilated and the baby is delivered. Fetal monitoring is important during this stage to ensure the well-being of the baby and to detect any potential issues.