The correct answer is B. sedative.
A sedative is a drug that calms or relaxes a person. It can be used to treat anxiety, insomnia, and other conditions. Sedatives can be taken orally, injected, or inhaled.
A tonic is a drink that is supposed to improve health. It is often made with herbs or other natural ingredients. Tonics are not typically used to treat medical conditions.
An antiseptic is a substance that kills or prevents the growth of bacteria. It is used to clean wounds and prevent infection. Antiseptics can be applied to the skin or used in a solution.
An antidote is a substance that counteracts the effects of a poison. It is typically given to someone who has been poisoned. Antidotes are usually administered by a doctor or other healthcare professional.
In the case of the woman who is feeling anxious, the doctor would likely prescribe a sedative to calm her down. A sedative would be more effective than a tonic, antiseptic, or antidote in this situation.