Normal blood pressure is considered to be:

Correct option is B

Ans. (b) Sol. The correct answer is (b) 120/80 mm Hg.
A blood pressure reading of 120/80 mm Hg is considered normal according to current medical guidelines. The top number, 120, represents systolic pressure, which is the pressure in the arteries when the heart beats. The bottom number, 80, represents diastolic pressure, which is the pressure in the arteries when the heart is at rest between beats.
Explanation of each option:
· (a) 150/100 mm Hg: This is considered high blood pressure (hypertension). A systolic value above 140 or a diastolic value above 90 is classified as hypertension.
· (b) 120/80 mm Hg: Correct answer. This is the normal blood pressure range for an adult.
· (c) 50/40 mm Hg: This is considered hypotension (low blood pressure). Such a low reading can indicate serious health issues like shock or dehydration.
· (d) 160/90 mm Hg: This is also considered hypertension. A systolic pressure greater than 140 or a diastolic pressure greater than 90 suggests high blood pressure.
Thus, 120/80 mm Hg is the normal blood pressure for a healthy adult.