The answer your looking for is B that is what i think
Human behavior which can be seen by other people and observed by other people is usually also the behavior which is often subject to measurement, control, and experimentation in psychological experiments. The field which does this is psychology.
<span>Hypertension or high blood
pressure is the force of the blood against the artery walls is high. There are
people in which the symptoms of hypertension is not present even though their
blood pressure is high. Although some may have symptoms or possible results of
hypertension such as headaches, shortness of breath or nosebleeds. When a
person observes that his or her blood pressure is high, he or she must make an
appointment with the doctor. So the answer for this is letter B.</span>
