Final answer:
Option 4, which states "Client will have a 7 AM blood pressure reading less than 140/90," is the most appropriate outcome criterion for a client with hypertension to maintain blood pressure within acceptable limits.
Step-by-step explanation:
The most appropriate outcome criterion for a client with hypertension aiming to "maintain a blood pressure within acceptable limits" would be option 4: "Client will have a 7 AM blood pressure reading less than 140/90." This specific and measurable goal directly relates to monitoring and achieving a target blood pressure that is indicative of proper management of hypertension. It is aligned with the medical standards that define hypertension as chronic and persistent blood pressure measurements of 140/90 mm Hg or above and follow the recommendations that blood pressure should typically be reduced to less than 140/90 mmHg. The other options do not directly measure blood pressure control, which is the primary concern in managing hypertension.