Final answer:
The priority intervention for a neonate with a blood sugar of 45 is to encourage breastfeeding or provide formula feed, which helps raise blood sugar and supports the newborn's immune system and hydration.
Step-by-step explanation:
The priority intervention for a neonate whose blood sugar is 45 is c) Encourage breastfeeding or provide formula feed. A blood sugar level of 45 is on the lower end of the normal range for a neonate, and the immediate need is to raise the blood sugar to a safe level through feeding. Colostrum, the first breast milk produced, is particularly important in this situation as it not only provides vital nutrients and energy to help boost the newborn's blood sugar, but it also helps to boost the newborn's immune system. It is essential for infants to obtain sufficient fluids to ensure proper hydration and prevent dehydration, as newborns are at higher risk for dehydration than adults due to their immature kidneys that produce very dilute urine.