Final answer:
The school bus driver shall lose their certificate for not less than 10 years for a DUI conviction.
Step-by-step explanation:
The subject of this question is Law. The question pertains to the penalties faced by a school bus driver for a DUI conviction. The correct answer is A. 10 years. According to the law, a school bus driver's certificate can be revoked for at least 10 years for a DUI conviction.