Final answer:
Heart failure is caused by conditions such as coronary artery disease, arrhythmia, and hypertension, but not diabetes insipidus.
Step-by-step explanation:
Heart failure occurs when the heart can't pump with sufficient force to transport oxygenated blood to all the vital organs. The causes of heart failure include coronary artery disease, arrhythmia, and hypertension.
However, diabetes insipidus does not cause heart failure. Diabetes insipidus is a disorder that affects the body's ability to regulate fluid balance, but it does not directly impact the functioning of the heart.