Mothers who smoke during pregnancy tend to have babies who are at greater risk for¬¬¬¬ __________

Which of the following students' statements about childbirth is true?

a. Marissa: "The third stage of labor occurs when the baby is actually delivered, and it usually lasts less than 20 minutes.". b. Asenate: "The total duration of labor varies from woman to woman, but it seems to be determined by individual hormonal levels.". c. Jessica: "In the United States and Canada approximately 50% of all deliveries are performed by cesarean section, mostly for the convenience of doctors.". d. Kristi: "In the United States, Black women are almost twice as likely as White, Latina, and Asian mothers to have a preterm birth.".

The body weights of adopted children __________

A) correlate more strongly with those of their biological than of their adoptive parents B) correlate more strongly with those of their adoptive than of their biological parents C) show little or no correlation to either their biological or adoptive parents D) correlate strongly with their adoptive siblings