Which of the following statements is true regarding the elimination of alcohol?

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The statement that a small percentage of alcohol is eliminated through sweat and breath is true because the body metabolizes alcohol primarily in the liver, but not all alcohol is processed through this organ. A small percentage, approximately 2-10%, can be expelled from the body through breath, which is the principle behind breathalyzer tests, and through sweat. This means that while the majority of alcohol is eliminated via metabolic processes in the liver, a notable minority can indeed be lost through alternative routes, thereby highlighting the body's multifaceted approach to processing and elimination.

The other statements do not accurately reflect how alcohol is processed in the body. For instance, it's misleading to claim that all alcohol is eliminated through urine since that does not account for the fractions expelled through breathing or sweating. Saying that alcohol is eliminated entirely through breath also misrepresents the physiological processes involved, as it ignores the primary route through metabolism in the liver. Lastly, the idea that alcohol is never eliminated from the body is incorrect since the body does have mechanisms in place to remove alcohol over time. Understanding these processes helps in comprehending how alcohol affects individuals differently depending on intake and body composition.