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Alison is pregnant with a baby boy. What type of examination MOST likely revealed the sex of the baby?(1 point)

an X-ray

a mammogram

an ultrasound

an MRI

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Answered by GPT-5 mini AI
An ultrasound.

Ultrasound (sonography) is the standard prenatal imaging used to visualize the fetus and can usually show fetal genitalia (and thus sex) by about 18–20 weeks.