Final answer:
A measurable goal for a smoking patient with a chronic infection might be to reduce smoking to one pack daily within a month, providing a clear and timely target that could lead to health improvements. The correct option would be: D. Patient will reduce smoking to one pack daily, in 30 days.
Step-by-step explanation:
An example of a possible measurable goal for the patient, who is a smoker with a chronic infection, could be "Patient will reduce smoking to one pack daily, in 30 days." This goal is specific, measurable, achievable, relevant, and time-bound (SMART), which is important for setting objectives in a health context.
The goal sets a clear target for the patient to work towards and includes a specific timeframe which allows for monitoring progress. Reduction in smoking can lead to significant health benefits, such as a lower risk of heart disease, chronic kidney disease, respiratory infections, and other serious conditions caused by smoking.