Final answer:
The nurse should prioritize educating the 15-year-old primigravid client on nutrition, avoiding toxins, the importance of prenatal vitamins (especially folic acid), and the fetal developments during the 16 to 26 week period, which include the onset of fetal hearing.
Step-by-step explanation:
The information that would be a priority for the nurse to include while reinforcing teaching to a 15-year-old primigravid client at 16 weeks gestation during an initial prenatal visit involves advising about the importance of good nutrition, exercise, and avoiding harmful substances. Additionally, the nurse should discuss the benefits of prenatal vitamins, such as those containing folic acid, which are crucial for preventing certain birth defects. It's also important to educate on the fetal developments occurring during this stage, including critical growth and sensory development such as hearing, which may prompt questions about bonding activities like playing music to the unborn baby.
As for the student's question about when a baby's hearing develops, around 16 to 26 weeks after fertilization significant changes occur, this is when the fetal structures for hearing are forming and the fetus may begin to hear some sounds. Routine prenatal care is emphasized for monitoring both the mother and the fetus health and reducing the risk of pregnancy complications.