Which of the following is an example of objective data?

Objective data refers to information that is measurable, observable, and quantifiable, typically collected through direct observation or physical examination. When considering the example of the nurse's observation of a rash, this represents objective data because it is based on what can be directly seen or assessed without interpretation or opinion.

This observation can include details such as the size, color, and distribution of the rash, all of which can be noted by the healthcare provider. This type of data is crucial in clinical settings, as it provides a factual basis for assessments and treatment decisions.

In contrast, other options involve subjective data, which is based on the client's personal perceptions or experiences. For instance, the client's report of pain level and mood descriptions reflect personal feelings and interpretations that can vary from person to person. Similarly, family history provided by a client may rely on the individual's recollection and understanding of their family's medical background, making it subjective rather than directly observable.