Final answer:
The correct statement indicating an understanding of teaching about lifestyle modifications to help regulate hypertension is to cut back salt intake to 4 grams per day.
Step-by-step explanation:
The correct statement by the patient that indicates an understanding of the teaching about lifestyle modifications to help regulate hypertension is option A: I'll cut back my salt intake to 4 grams per day.
Reducing salt intake can help lower blood pressure, as excessive sodium consumption is associated with hypertension. The average person needs only about 500 mg of sodium per day, but most people consume up to 10 times as much. By cutting back salt intake to 4 grams per day, the patient demonstrates an understanding of the importance of reducing sodium intake to regulate hypertension.