The correct option is C Antibiotics
Bordetella pertussis is a bacterium that causes a highly contagious respiratory tract infection called whooping cough or pertussis. It is characterised by a runny nose, nasal congestion and sneezing. The treatment would mainly consist of antibiotics which are chemical agents obtained from organisms such as fungi and bacteria, that work against other microbes by retarding their growth or killing them.
Antipyretics are drugs that are used to reduce body temperature (fever).
Analgesics are a class of drugs that are used to relieve pain and are also known as pain killers.
Laxatives are drugs used to treat constipation. They loosen stool and increase bowel movement.