Multiple choice In humans, the normal systolic and diastolic blood pressure is about 70 and 110mm of Hg 90 and 110mm of Hg 80 and 140mm of Hg 80 and 120mm of Hg Reveal answer Fill a bubble to check yourself D Correct answer Explanation The normal systolic pressure is about 120 mm of Hg and diastolic pressure is 80 mm of Hg. So, option 4 is correct.