Which of the following statements should the nurse make when preparing a client who is at 10 weeks of gestation for an ultrasound procedure?

Choice A reason: Detecting congenital anomalies at 10 weeks via ultrasound is limited, as major anomalies are better assessed at 18-20 weeks when fetal structures are more developed. Early ultrasound primarily confirms viability and gestational age. While some anomalies may be seen, it is not the primary purpose at this stage, per obstetric imaging protocols. Choice B reason: An ultrasound at 10 weeks accurately determines gestational age by measuring crown-rump length, enabling calculation of the expected delivery date. This measurement reflects embryonic development and is most precise in the first trimester, aligning with fetal growth patterns and supporting obstetric planning for pregnancy monitoring and delivery timing. Choice C reason: Assessing amniotic fluid volume at 10 weeks is not the primary focus of ultrasound, as fluid levels are typically evaluated later (second trimester) when oligohydramnios or polyhydramnios become relevant. Early ultrasound prioritizes viability and dating, as amniotic fluid dynamics are less critical at this stage of embryonic development. Choice D reason: Determining the biological sex of the fetus at 10 weeks is not feasible with standard ultrasound, as genital differentiation is clearer after 12-14 weeks or later. Early ultrasound focuses on gestational age and viability, not sex, which requires advanced imaging or genetic testing, per fetal development and imaging science.