Which of these could most likely be used to identify a person? a) favorite mobile app b) hair color c) social security number d) email address

The right answer is C

The Social Security Number is an alphanumeric code used to uniquely identify a person in a national identification directory. It is built from the civil status transmitted by the town halls (sex, year and month of birth, department and commune of birth, serial number of the civil registry). It is a stable and reliable identifier, designed to remain immutable for the individual for his life.

the answer should be c