In Canada, Which of the Following Individuals Has Achieved "Adulthood

Multiple Choice

In Canada, which of the following individuals has achieved "adulthood?"

A) Sarah, who is 18 years old and can vote in the next election
B) Bob, who is 29 years old and is getting married
C) Ralph, who is 23 years old and can rent a car
D) Josie, who is 17 years old and can drink alcohol