Final answer:
If the 84-year-old individual is showing signs of poor diet and malnutrition, this would be classified as neglect, which is a type of elder abuse where the caretaker fails to provide adequate care for the elderly person's essential needs.
Step-by-step explanation:
Based on the information provided, if the 84-year-old individual is showing signs of poor diet and malnutrition, and potential abuse is being considered, this would be classified as neglect. Neglect is a type of elder abuse where the caretaker fails to provide adequate care for the elderly person's essential needs, such as proper nutrition, hygiene, and medical attention.