To determine the most effective antibiotics for treating a bacterial infection, sensitivity testing is performed: - Disk Diffusion Method: Antibiotic-impregnated disks are placed on the surface of an inoculated agar plate, and the zones of inhibition are measured to determine sensitivity. - MIC Testing: The Minimum Inhibitory Concentration (MIC) of an antibiotic is determined by diluting the antibiotic in broth and observing bacterial growth.