Final answer:
Ultrasound imaging is the technique used to study fetal growth and development during pregnancy. It can assess fetal heart rate, gestational age, and the presence of fluid pockets. It can also detect any abnormalities in the fetus.
Step-by-step explanation:
Ultrasound imaging is the technique of choice for studying fetal growth and development during pregnancy. It can be used to assess various aspects of fetal well-being, including fetal heart rate, gestational age, and the presence of a pocket of fluid. Ultrasound can also be used to detect any abnormalities in the fetus. By using ultrasound, healthcare providers can gather important information about the health and development of the fetus.