Legal drinking age

The minimum age to purchase and consume varies, but the most common age is 18 years. However, in North America the age limits varies between 18 and 21 years of age. Throughout the United States the minimum legal age to purchase any alcoholic beverage from a shop, supermarket, liquor store, bar, club or any other licensed premises is 21 years of age. In Canada each province can decide which minimum age limit is to be set to buy or consume alcohol. Most provinces have a minimum age of 19 years, while Alberta, Manitoba and Quebec have set a minimum age of 18 years. In South America all countries have set a minimum purchase age of 18 years, except for Guyana where minors aged 16 or 17 may consume a glass of beer, wine or cider in a restaurant provided they buy a meal, and Paraguay the only country with a minimum legal purchase and drinking age of 20 years.

Options are:
1). no.
2). yes.
Is this statement correct "can you buy alcohol at the age of 18"?
1).