Correct Answer:

120/80 mm Hg

Solution : The correct option is 120/80 mm Hg.

Normal blood pressure for adults is typically defined as -Systolic Blood Pressure (the top number)- less than 120 mm Hg, and Diastolic Blood Pressure (the bottom number)- less than 80 mm Hg. These values are usually measured in millimetres of mercury (mm Hg) and are written as 120/80 mm Hg. Blood pressure can fluctuate throughout the day due to various factors, including physical activity, stress and caffeine intake.