Final answer:
Endocarditis is the correct term for inflammation of the inner lining of the heart.
Step-by-step explanation:
The correct answer is option 1: Endocarditis. Endocarditis refers to the inflammation of the inner lining of the heart, known as the endocardium. It can be caused by certain infections and can result in damage to the heart valves. Pericarditis refers to the inflammation of the sac surrounding the heart, myocarditis refers to the inflammation of the heart muscle tissue, and aortitis refers to the inflammation of the aorta.