Final answer:
The maximum fine for a second DUI conviction for Mississippi drivers over the age of twenty-one is $1,000.
Step-by-step explanation:
The maximum fine for a second DUI conviction for Mississippi drivers who are over the age of twenty-one is $1,000. Additionally, a second DUI conviction can also result in imprisonment for a period of up to one year.
It is important to note that the penalties for DUI convictions may vary depending on the specific circumstances of the case and any previous convictions.