The tenth character of the vin designates which of the following? a. engine b. model year c. model d. country of origin

The correct answer is B. Model year.
The tenth digit of the VIN designates the year. More specifically the year of manufacture of the vehicle, it applies to all makes and models. Because there are only 21 letters in the alphabet (I, O, Q, U, and Z are not used) and nine numbers, they are recycled every thirty years.

Are there any answer choices or is this an open ended question