Final answer:
Option (B), The 'Mode of Action' refers to the mechanism by which a pesticide impacts its target pest, defining how it works to control or eliminate the pest.
Step-by-step explanation:
The term "Mode of Action" refers to the way in which the pesticide affects the target pest. Specifically, it describes how a pesticide works to control or kill the target organism. For example, some pesticides might disrupt the nervous system of insects, while others could inhibit the growth of weeds by affecting their cell growth.
It's an important concept in the development and use of pesticides as it helps to ensure that the pesticide is doing the intended job effectively and safely, without causing undue harm to non-target species or the environment.
In the context of antimicrobial drugs, 'mode of action' would refer to the ability of the drug to harm the target microbe without harming the host, thereby providing a measure of the drug's effectiveness and safety for use in treating infections.