Final answer:
The nurse should advise the mother to breastfeed the infant soon after birth, before the baby is taken to the nursery. This is because suckling triggers oxytocin release, which stimulates the milk letdown and allows breast milk to be consumed by the infant. Breast milk provides essential hydration and nutrients for the baby's growth and development.
Step-by-step explanation:
The most appropriate response by the nurse is option 4: Soon after birth, before the infant is taken to the nursery. Suckling triggers oxytocin release, which stimulates myoepithelial cells to squeeze milk from alveoli. Breast milk then drains toward the nipple pores to be consumed by the infant. The lactating mother supplies all the hydration and nutrients that a growing infant needs for the first 4–6 months of life, so it is important to breastfeed the infant soon after birth to establish a good milk supply and ensure the infant receives the necessary nourishment.