Answer :
Final answer:
The average length of a newborn baby at birth, measured from head to toe, is approximately 20 inches.
Explanation:
The average length of a newborn baby at birth is approximately 20 inches (or 51 cm), which answers the posed question as option b. This measurement corresponds to the total length of the baby from head-to-toe. Prior to birth, measurements are often made from 'crown-to-rump' because the fetus is typically curled up in the womb. That measurement range from 35.5-40.5 cm, about 14–16 inches.
During the third trimester of pregnancy, the fetus experiences its most rapid growth. By the end of this period, the fetus typically measures about 50 cm (19-20 inches) long. Post-birth measurements are no longer confined to the fetal position, and so the whole length is taken into account.
It’s worth noting that newborn lengths can vary, with normal ranges from 18-22 inches. However, the most frequent, hence the 'average', is about 20 inches.
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