Answer:
The answer is option c. Nonreactive fetal heart rate.
Explanation:
Foetal biophysical profile is an important determinant of foetal hypoxia. This involves evaluating several aspects of the foetus through a non stress test and ultrasound examination. In the non stress test (NST) the foetal heart rate is monitored.
While Ultrasound scan is used to evaluate
i. the amount of amniotic fluid,
ii. foetal Limb and body movements,
iii. foetal mucle tone, and
iv. foetal breathing movements.