Final answer:
Fluoroquinolones may induce seizures in epileptic animals due to their interaction with GABA receptors in the brain and are the antimicrobial class associated with this risk.
Step-by-step explanation:
The antimicrobial that could induce seizures in an epileptic animal is B. Fluoroquinolones. This class of drugs has been associated with increased risk of seizures, particularly in patients with pre-existing central nervous system disorders such as epilepsy. Fluoroquinolones may have this effect due to their ability to interact with gamma-aminobutyric acid (GABA) receptors in the brain. In contrast, Tetracyclines, Sulfonamides, and Penicillins are not commonly associated with seizure risk in epileptic patients.