Final answer:
The nurse should obtain an interpreter to facilitate communication of medication information to a patient with limited English proficiency.
Step-by-step explanation:
The nurse should complete the discharge teaching for a patient with limited English proficiency by obtaining an interpreter to facilitate communication of medication information (option C). This ensures that the patient fully understands the medication administration directions and any potential side effects. Using a dictionary (option A) may not provide accurate or comprehensive information, and explaining to the patient's 14-year-old daughter (option B) may not be appropriate as the daughter may not fully understand the information. Using a picture board and visual aids (option D) could be helpful, but an interpreter ensures proper communication and understanding.