Because their skin is dark and society calls anybody with dark skin "black"
Answer:attempting to determine etiology
Explanation:Etiology in psychology Rees to factors that have caused an individual to develop a certain disorder. Mental and psychological disorders have been found by psychologist to be caused by internal factors , loss, pain and environmental factors and this is why Dr Clarkson is trying to establish these factors because they are crucial in making psychological diagnosis.
The answer is D because you want to have a control group! Hope it helps!
Answer:
b. mitral regurgitation
Explanation:
Mitral Regurgitation
It is the condition of the leakage of blood backward via the mitral valve every time the left ventricle contracts .
Due to the leakage in the mitral valve , the blood flows in two ways , in the process of contraction .
And some of the blood flows in its normal order , i.e. , from the ventricle via the aortic valve , but some blood flows back into the atrium .
<u>And due to this leakage , the blood pressure increases .</u>