Final answer:
The nursing diagnosis that best addresses a client problem associated with an IQ of 47 is Altered social interaction R/T nonadherence to social convention.
Step-by-step explanation:
The nursing diagnosis that best addresses a client problem associated with an IQ of 47 would be Altered social interaction R/T nonadherence to social convention. Individuals with intellectual disability may have impaired social skills, such as difficulty in reading social cues, making eye contact, and understanding social conventions.