The nurse is providing care to​ Deanna, a​ 9-month-old infant diagnosed with failure to thrive​ (FTT). Deanna's parents are teenagers who lack knowledge regarding infant nutrition. A nursing diagnosis of potential for enhanced knowledge is the priority diagnosis for this family. Which nursing intervention is appropriate for the nurse to include in​ Deanna's plan of care for this priority nursing​ diagnosis?
A) Referring the client to a speech pathologist
B) Demonstrating tube feedings
C) Assessing weight prior to discharge
D) Teaching about the​ child's nutritional requirements