Approximately how long does it take for three beers to clear your system?

Answer: C — 3 hours

The correct answer indicates that it takes approximately three hours for three standard beers to clear from your system. When we consider the rate at which the body metabolizes alcohol, a common guideline is that the liver processes about one standard drink per hour. Since one beer is roughly equivalent to one standard drink, if you consume three beers, it would typically take around three hours for the alcohol to be fully metabolized and cleared from your bloodstream. This process can vary slightly based on factors such as a person's weight, age, gender, and overall health, but the three-hour timeframe is a general rule that applies to many individuals under normal circumstances.