If today is September 15, 2020, which birthdate indicates a customer of legal age to purchase alcohol?

To determine which birthdate indicates a customer of legal age to purchase alcohol as of September 15, 2020, one must consider the legal drinking age in many regions, which is typically 21 years.

A birthdate of September 1, 1999, means that the individual would turn 21 on September 1, 2020. This means they reached the legal drinking age just a couple of weeks prior to September 15, 2020. Since they are already 21, they are legally allowed to purchase alcohol on that date.

The other birthdates reflect individuals who are younger than 21 on September 15, 2020. For example, someone born on October 15, 2000, will not turn 21 until October 15, 2021, and therefore is not of legal age at the time in question. Similarly, a person born on April 30, 2001, would only be 19, and the individual born on March 1, 2000, would be 20, both of whom are also below the legal drinking age.

This makes the birthdate of September 1, 1999, the only correct choice for a customer of legal age to