Answer Questions 44 to 46 Based on Case A

Answer questions 44 to 46 based on Case A.CASE A
Charlie is an 80-year-old male patient, who presents to the dental clinic for routine prophylaxis.His wife passed away about a year ago.Charlie has had several missing teeth on both his maxillary and mandibular arch.He lives on a limited income, so he does not want to have any type of prosthetic dental work done.He says, "I'm old, and I don't need to spend the money on fake teeth-I eat just fine." After reviewing Charlie's health and pharmacologic history, the dental hygienist notes that he has lost a considerable amount of weight in the past 6 months.In addition, four new areas of decay are identified during the oral examination.The hygienist questions Charlie about his dietary habits.Charlie reports that he eats about two meals a day and that he buys a lot of convenience foods because they are much easier to prepare.He adds that he drinks black coffee with two tablespoons of sugar in a day.
-Which of the following statements BEST describes the dietary reference intake (DRI) ?

A) The intake level sufficient to meet nutrient requirements of nearly all healthy individuals
B) Value based on the observed average or experimentally set intake by individuals that appear to sustain a defined nutritional status
C) Nutrient intake value estimated to meet the requirements of half the healthy individuals in a group
D) Value based on approximation of nutrient intake by a group of healthy people