Answer:
A- Controllable risk factor --- Not wearing a seat belt.
B- Uncontrollable risk factor --- Someone else driving drunk.
Step-by-step explanation:
A- It is a controllable risk factor because it depends on the sole will of the person to put on the seat belt to reduce the risks of a possible traffic accident. The person has total control of his decision.
B- This case is an uncontrollable risk factor, since it does not depend on the will of the person but on a random alien factor, which is impossible to foresee and manage.