A nurse is reviewing the results of a biophysical profile for a client who is at 37 weeks of gestation. Which of the following findings indicates fetal well-being?

A. An amniotic fluid index of 1 cm is abnormally low (oligohydramnios) and indicates potential fetal compromise, so this finding does not reflect fetal well-being. B. Fetal limb movements are an important indicator of fetal activity and neurological function. Observing four or more discrete limb movements in 30 minutes meets one of the criteria for a reassuring biophysical profile, suggesting the fetus is active and neurologically intact. C. A nonreactive nonstress test indicates the fetus is not showing adequate heart rate accelerations in response to movement, which can signal potential hypoxia or fetal compromise. D. Sustained fetal breathing movements of 20 seconds in 30 minutes are desirable, but the minimum standard for the BPP is usually one or more episodes of 30 seconds within 30 minutes; 20 seconds alone may not meet the threshold, making limb movements a more reliable indicator in this scenario.