The epicardium
a. covers the surface of the heart.
b. lines the walls of the ventricles.
c. is known as the fibrous pericardium.
d. attaches inferiorly to the diaphragm.
e. is also called endocardium.

The best answer to the question: The epicardium:, would be, A: Covers the surface of the heart.

Explanation:

The heart is an organ whose function is absolutely vital to the entire body. Because of its vitality, and also its vulnerability and fragility, this organ is thus highly protected by mostly the chest cavity with its bone strcutures, its fat content and most of all, by layers of different types that cover both the all-important myocardium (the layers responsible for the contraction of the heart) and the endocardium (the layer that covers the chambers and inner parts of the main blood vessels). Going from the inside out, after the myocardium, the heart is covered with a double layer, one serous and the other fibrous, which are separated by a cavity filled with fluid. The first, and serous layer, is the one that protects the myocardium, produces the pericardial fluid which protects the heart from sudden impact and sudden changes in the chest cavity and contains the coronary vessels. This layer is known as the epicardium. The pericardium is the outtermost fibrous layer, after the epicardium, and it is the one that anchors the heart to the chest wall, and other organs.

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