An abused elderly client was suspected to have prolonged protein malnutrition which of the following laboratory data would be the most sensitive indicator?

Correct Answer: A

Rationale: Prealbumin is the most sensitive indicator of protein status due to its short half-life (2-3 days), reflecting recent nutritional changes more quickly than albumin or transferrin.

Correct Answer: C

Rationale: Vegetables and fruits (e.g., citrus, peppers) are the primary dietary sources of vitamin C, unlike meats, dairy, or grains, making C correct.

Correct Answer: C

Rationale: African American ancestry is associated with higher bone density and lower osteoporosis risk, unlike the other factors, making C the exception.

Correct Answer: B

Rationale: Energy balance occurs when calorie intake equals output, maintaining weight, making B correct.

Correct Answer: C

Rationale: Malnutrition often accompanies infirmity (disease/illness), not always aging, poverty, or overnutrition, making C correct.