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 .
And due to this leakage , the blood pressure increases .