Final answer:
Prehypertension is defined as having a systolic blood pressure between 120-139 mm Hg and a diastolic blood pressure between 80-89 mm Hg, which corresponds to option B.
Step-by-step explanation:
The topic of prehypertension pertains to a specific blood pressure range that is higher than normal but not yet at the level classified as hypertension. According to the given information, prehypertension is defined as having a systolic blood pressure between 120-139 mm Hg, and a diastolic blood pressure between 80-89 mm Hg. Therefore, the correct answer to the range that characterizes prehypertension is option B: Systolic 120-139 Diastolic 80-89. Hypertension, which requires treatment, begins at a threshold of 130/80 mm Hg. Blood pressure readings above 120/80 mm Hg but below 140/90 mm Hg fall into this category of prehypertension, signaling a risk for potential health issues, including heart attack, stroke, and chronic kidney disease.