Final answer:
An at fault accident involving a bodily injury within the last 3 years would disqualify a person from receiving the 20% Good Driver Discount.
Step-by-step explanation:
The event within the last 3 years that would disqualify a person from receiving the 20% Good Driver Discount is Option C: An at fault accident involving a bodily injury.
An event that would disqualify a person from receiving the 20% Good Driver Discount within the last 3 years is: C. An at fault accident involving a bodily injury. Auto insurance companies consider at-fault accidents, especially those involving bodily injuries, as indications of high-risk behavior. Being involved in such an accident typically increases the driver's risk profile and may lead to higher insurance premiums or the loss of discounts like the Good Driver Discount. In contrast, no-fault accidents do not necessarily indicate risky driving behavior to the same extent.
This is because an at fault accident involving a bodily injury indicates a higher level of risk and a higher chance of future accidents. The Good Driver Discount is usually given to drivers who have demonstrated safe driving habits and a low risk of accidents. Therefore, an at fault accident involving a bodily injury would disqualify a person from receiving the discount.