Which of the following is the primary cause of cirrhosis of the liver? Chronic alcohol abuse Viral hepatitis Obesity and fatty liver disease All of the above

The primary cause of cirrhosis of the liver can be any condition that leads to chronic liver damage and scarring. The options provided are all potential causes of cirrhosis:<br /><br />1. **Chronic alcohol abuse**: Long-term excessive alcohol consumption can lead to liver inflammation, fatty liver, hepatitis, and eventually cirrhosis.<br />2. **Viral hepatitis**: Infections caused by various hepatitis viruses (A, B, C, D, and E) can lead to chronic liver disease and cirrhosis.<br />3. **Obesity and fatty liver disease**: Non-alcoholic fatty liver disease (NAFLD) associated with obesity can progress to non-alcoholic steatohepatitis (NASH) and eventually lead to cirrhosis.<br /><br />Therefore, the correct answer is:<br /><br />**All of the above**<br /><br />Each of these conditions can independently or collectively contribute to the development of cirrhosis.