Final answer:
A nurse looks for reflexes, physical development, and sensory abilities when determining a newborn's ability to take in nourishment by nipple and mouth.
Step-by-step explanation:
A nurse looks for several factors in determining a newborn's ability to take in nourishment by nipple and mouth. One factor is the presence of reflexes such as the sucking reflex and the rooting reflex, which help the baby find and latch onto the nipple. The nurse also evaluates the baby's physical development, such as their weight gain and the growth of their head and trunk. Finally, the nurse considers the newborn's sensory abilities, including their sense of taste and smell.