The answer is d. High blood pressure has no symptoms.
High blood pressure is a condition in which blood makes
pressure on artery walls. It usually has no obvious symptoms, unless it is very
high, and the only way to find out if high blood pressure is present is to
measure it.
Arteriosclerosis is a condition in which blood vessels become
thin and stiff. Atherosclerosis is a condition in which cholesterol, fats, and
other substances build plaque inside the arteries. In both cases, blood flow is
affected.
