Final answer:
Babies' cries are linked to the sounds they heard in the womb, as infants utter melody contours similar to those perceived prenatally.
Step-by-step explanation:
The sentence from the passage that summarizes how babies' cries are linked to the sounds they heard in the womb is: Infants utter melody contours similar to those perceived prenatally. This indicates that babies' cries are influenced by the sounds they were exposed to before birth. The study suggests that babies replicate the melody contours of their parents' language in their cries, showing a connection between prenatal exposure to language and the development of crying patterns.