What substance can be used to counteract pesticide poisoning?

An antidote is a substance specifically designed to counteract the effects of a poison or toxin, including pesticide poisoning. Different types of poisons require different antidotes; thus, the correct antidote for pesticide exposure will depend on the specific pesticide involved. Antidotes work by neutralizing the toxic effects of the substance or blocking its action in the body, which is crucial for minimizing harm and facilitating recovery from poisoning.

The other options do not serve this purpose: antiseptics are used to prevent infection by inhibiting the growth of microorganisms, analgesics relieve pain without addressing poisoning, and antibiotics are used to treat bacterial infections rather than neutralizing toxins. Therefore, selecting an antidote is the appropriate response in the context of pesticide poisoning, as it directly relates to the management and treatment of toxic exposure.