Final answer:
To address sore nipples while breastfeeding, the nurse should adjust the baby's latch.
Step-by-step explanation:
To address sore nipples while breastfeeding, the nurse should adjust the baby's latch. A proper latch involves the baby taking in enough of the areola along with the nipple, which helps prevent nipple soreness. Adjusting the latch can ensure that the baby is positioned correctly and applying the right suction to the breast.