Final answer:
The effective removal of alcohol from the body is solely through the passage of time, allowing the liver to metabolize alcohol at its natural, fixed rate. Other methods like drinking coffee or cold showers are ineffective.
Step-by-step explanation:
The only effective way to remove alcohol from the body is time. Alcohol is metabolized by the liver through a series of reactions, with the first converting alcohol into acetaldehyde, followed by other products. Since the liver can only process alcohol at a fixed rate, consuming strong coffee or taking a cold shower will do nothing to speed up the process. Notably, the body metabolizes alcohol at a rate that varies by individual, with a typical rate for an average male and slightly slower rates for women. Additionally, alcohol consumption causes increased urination and the risk of dehydration due to the inhibition of a hormone that causes the body to retain water.