21. Moderate consumption of alcohol has been related to a lower incidence of coronary heart disease. While heavy consumption is detrimental, moderate intake has been linked to some cardiovascular benefits. The correct option is C. C. Lower incidence of coronary heart disease 22. The two brain regions mostly damaged by heavy alcohol use are the cerebral cortex and hippocampus. The cerebral cortex is involved in higher-order functions, and the hippocampus is crucial for memory formation, both of which are significantly impaired by chronic alcohol abuse. The correct option is A. A. Cerebral cortex and hippocampus 23. Wernicke-Korsakoff syndrome is a disease characterized by amnesia and confabulation. Confabulation is the production of fabricated, distorted, or misinterpreted memories without the conscious intent to deceive, often used to fill in memory gaps. The correct option is D. D. Confabulation 24. Wernicke-Korsakoff syndrome results from severe malnutrition, specifically a deficiency of thiamine (vitamin B1), which is common in chronic alcoholics due to poor diet and impaired nutrient absorption. The correct option is D. D. Severe malnutrition 25. The group representing the greatest number of alcohol-related causes of death includes motor vehicle accidents, cirrhosis of the liver, and suicide. These three categories account for a substantial portion of mortality directly or indirectly linked to alcohol consumption. The correct option is D. D. Motor vehicle accidents, cirrhosis of the liver, suicide