Final answer:
In Canada, the legal age of an adult is generally 18, but it is 19 in some provinces and territories.
Step-by-step explanation:
The legal age of an adult in Canada varies depending on the province or territory. In most provinces, the legal age of adulthood is 18 years old, which aligns with many of the legal age norms established by governments around the world, such as being legally responsible for oneself. However, in some provinces, such as British Columbia, Nova Scotia, New Brunswick, Newfoundland and Labrador, Northwest Territories, Yukon, and Nunavut, the legal age of adulthood is 19 years old. Therefore, the correct answer to the question is both a. 18 and b. 19, depending on the specific region of Canada.