Final answer:
Objective data refers to measurable and observable information obtained through direct observation or measurement. The correct answer is option D and F.
Step-by-step explanation:
Objective data refers to measurable and observable information that is obtained through direct observation or measurement. In the given options, the patient statements 'I have a rash on my arm' and 'I vomit every time I eat something' are examples of objective data. These statements can be objectively verified by the nurse through visual examination or by assessing the patient's physical symptoms.
On the other hand, statements like 'I am hungry', 'I feel very warm', 'I ate half my lunch', and 'I have the urge to urinate' are subjective data as they are based on the patient's personal experiences or feelings, which cannot be externally verified. Similarly, vomiting is an observable reaction that can be confirmed by the healthcare provider.