Which statement about sobering up is true?

The statement that none of the provided methods—cold showers or black coffee—can effectively sober someone up is accurate. Sobering up is primarily a physiological process that takes time for the body to metabolize alcohol. The liver needs to process the alcohol through its enzymatic functions, and this process cannot be accelerated by external factors such as cold showers or caffeine from coffee.

Both cold showers and black coffee may create the illusion of increased alertness, but they do not reduce blood alcohol concentration or hasten the metabolism of alcohol in the body. Cold showers might shock the system and temporarily make a person feel more awake, but they do not counteract the effects of alcohol. Similarly, black coffee may stimulate the central nervous system, helping a drunk person feel more alert, but it does not eliminate alcohol from the bloodstream. Therefore, it is vital to wait for the body to process the alcohol naturally rather than relying on these methods.