Which patient learning goal is measurable?

A. "Understanding" is subjective and cannot be directly measured. It would be more effective if the goal focused on the patient demonstrating their understanding (e.g., "The patient will explain the importance of daily iron supplements"). B. Feelings such as comfort are difficult to measure objectively. C. This goal is too broad and vague to be measured effectively. It's not clear how "sufficient information" would be assessed. D. This goal is measurable because the nurse can observe or document if the patient verbalizes the responsibility to obtain their daily weights, which is an objective outcome that can be assessed.