What type of medications are antitussives?

Antitussives are specifically designed to suppress the cough reflex, making option B the correct choice. These medications are often used to treat a dry cough, which can be disruptive and uncomfortable for the patient. By acting on the nervous system or throat, antitussives can help to provide relief by reducing the urge to cough.

In contrast, the other options refer to different therapeutic classes. Medications that relieve pain, such as analgesics, have a completely different function, targeting pain sensation rather than cough reflex. Medications used to reduce fever, known as antipyretics, focus on bringing down elevated body temperature rather than addressing coughing. Medications that alleviate anxiety fall under the category of anxiolytics, which aim to reduce feelings of anxiety rather than suppressing cough. Therefore, antitussives are unique in their role as cough suppressants, distinguishing them clearly from those other types of medications.