B. Systolic and diastolic
Explanation: The two numbers in a blood pressure reading represent the pressure exerted by the blood against the artery walls. The first (top) number is the systolic pressure, which measures the pressure in the arteries when the heart beats. The second (bottom) number is the diastolic pressure, which measures the pressure in the arteries when the heart is at rest between beats.
A. It often has no noticeable symptoms
Explanation: High blood pressure often has no obvious symptoms, which is why it's called the "silent killer." Many people with hypertension are unaware of their condition until they experience a serious health event like a heart attack or stroke.
B. High blood pressure
Explanation: High blood pressure is a significant risk factor for stroke. It can damage blood vessels in the brain, leading to the formation of blood clots or weakened vessels that may rupture, causing a stroke.
B. Heart attack and stroke
Explanation: Untreated high blood pressure can lead to serious health complications, including an increased risk of heart attack, stroke, heart failure, kidney disease, and vision problems.