B is nota component of rhis
B,D letters in the image represent the heart's ventricles. thus option D is correct.
<h3>What are the parts of the heart?</h3>
The left atrium, right atrium, and two lower chambers known as the left and right ventricles make up the four chambers that make up the heart. The tricuspid, pulmonary, mitral, and aortic valves are among its four valves.
The ventricle is one of two sizable chambers at the base of the heart that gather and discharge blood to the lungs and peripheral beds of the body. An atrium, a nearby chamber in the upper heart that is smaller than a ventricle, provides the blood pumped by a ventricle.
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According to these criteria, the service sector covered in this paper is the economic activities other than agriculture, hunting, forestry and fishing, mining and quarrying, manufacturing, utilities (electricity, gas and water supply) and construction.
