Final answer:
The American Heart Association defines normal blood pressure as less than 120/80 mm Hg, with values above this range indicating prehypertension or hypertension, which can lead to serious health complications. The correct multiple-choice option is (A).
Step-by-step explanation:
According to the American Heart Association, a normal blood pressure is considered to be less than 120/80 mm Hg. A reading with a systolic pressure (the top number) below 120 mm Hg and a diastolic pressure (the bottom number) below 80 mm Hg is deemed normal. Hypertension, or high blood pressure, is a serious condition that increases the risk for heart attacks, strokes, aneurysms, peripheral arterial disease, chronic kidney disease, and heart failure. Therefore, it is crucial for individuals to maintain their blood pressure within the normal range and adhere to any treatment plans if diagnosed with hypertension. The correct multiple-choice option is (A).