Final answer:
Alcohol is removed from the body through four primary methods: liver metabolism, exhalation, urination, and sweating. The liver's metabolic processes are the most significant method, with other ways being less substantial.
Step-by-step explanation:
Alcohol is removed from the body primarily through metabolic processes in the liver, which account for up to 85% - 98% of the elimination of alcohol from the bloodstream. The liver converts alcohol to acetaldehyde using enzymes such as alcohol dehydrogenase and then to other non-toxic substances that can be excreted.
Moreover, alcohol is also expelled from the body through exhalation, urination, and sweating, although these routes play much smaller roles compared to metabolism by the liver. Given the options provided, the answer to the question 'How many ways is alcohol removed from the body?' would be Four (Option D), as it is metabolized by the liver, exhaled through the lungs, excreted in the urine, and expelled in sweat.