Final Answer:
If a person fails the blood alcohol content (BAC) test, his/her license will be suspended for at least: 90 days.
The correct option is C.
Explanation:
When an individual fails a blood alcohol content (BAC) test, the duration of the license suspension can vary depending on local laws and circumstances. However, a common duration for a first offense of failing a BAC test is typically around 90 days. This period may differ in various jurisdictions, but it's often a standard duration for the initial suspension due to driving under the influence (DUI) or driving while intoxicated (DWI) charges.
So, the correct option is C.