Final answer:
The nurse would be least likely to assess a rash on the abdomen in a 7-year-old boy with pharyngitis.
Step-by-step explanation:
In a 7-year-old boy with pharyngitis, the nurse would be least likely to assess a rash on the abdomen. Pharyngitis primarily affects the throat and is characterized by symptoms such as sore throat and headache, difficulty swallowing, and working hard to breathe in severe cases. A rash on the abdomen is not a typical symptom of pharyngitis.