A loud pansystolic murmur that radiates to the axilla is most likely a result of a. aortic stenosis. b. mitral regurgitation. c. aortic regurgitation. d. mitral stenosis.

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.