An antitussive is a a. non-productive cough. b. cough-suppressant medication. c. cough medication used for drying up secretions. d. cough medication that increases and liquefies the mucus secretions.

B. cough-suppressant medication.

Explanation: Antitussives are commonly ordered for the dry, hacking, nonproductive cough that keeps the patient up at night. An antitussive helps to suppress the cough. Cough preparations may also contain antihistamines to dry up secretions, decongestants to reduce swelling in the nasal passages, and flavoring to improve the taste... PF

a.

explanation:

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue