Which category is characterized as objective data?

A. The ages and relationships of household members are subjective data because they are reported by the patient and not directly measured or observed. B. Usual dietary patterns and intake are also subjective data, as they rely on patient self-reporting rather than measurable, verifiable findings. C. A list of herbal supplements regularly used is subjective because it depends on the patient’s recall and self-reporting rather than objective measurement. D. Lab values are considered objective data because they are measurable, verifiable, and obtained through diagnostic testing rather than patient self-reporting. Objective data are based on observable and quantifiable factors, making them more reliable for clinical decision-making.