Final answer:
Ultrasound is the preferred and safest method for assessing amniotic fluid volume during pregnancy, providing real-time, non-invasive imaging.
Step-by-step explanation:
The preferred method for amniotic fluid volume assessment is ultrasound. This non-invasive imaging technique uses high-frequency sound waves to create real-time images of the fetus and the amniotic fluid surrounding it. Ultrasound is the safest and least invasive method available, which makes it the ideal choice for monitoring fetal growth and development, as well as assessing amniotic fluid volume during pregnancy. Ultrasound imaging uses the transmission of high-frequency sound waves into the body to generate a real-time image of anatomy and physiology. It is non-invasive and safe, making it the technique of choice for studying fetal growth and development.