The correct answer is D. Antidote.
An antidote is a substance that counteracts the effects of a poison. It can be administered to a person who has been poisoned, or it can be used to prevent poisoning from occurring. Antidotes are typically specific to the type of poison that they are designed to treat. For example, there is an antidote for cyanide poisoning, but there is no antidote for all poisons.
Serum is a fluid that is found in the blood. It contains proteins, antibodies, and other substances that are important for the body’s immune system. Antiseptics are substances that kill or prevent the growth of bacteria. Seromycin is a medication that is used to treat tuberculosis.
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