Bactericidal drugs are characterized by what property?

Bactericidal drugs are specifically designed to kill bacteria, rather than just inhibiting their growth. This means that they actively work to eliminate bacterial cells at concentrations that can be safely and effectively used in a clinical setting. This property makes them particularly valuable in treating serious infections where rapid bacterial eradication is essential for patient recovery.

In contrast, options that involve merely inhibiting growth or cell division describe bacteriostatic properties, where the drugs stop bacteria from multiplying but do not necessarily kill them outright. Facilitating bacterial mutation would not be characteristic of any therapeutic approach aimed at combatting infections, as that would counteract the intended effect of the drugs.

Thus, the focus on the ability of bactericidal agents to kill bacteria confirms that option B correctly encapsulates the fundamental nature of these drugs.