The correct answer is: B. Typhoid
Typhoid fever is a bacterial disease caused by Salmonella typhi. It is spread through contaminated food or water, or through contact with the feces of an infected person. The symptoms of typhoid fever include fever, headache, stomach pain, and diarrhea. In severe cases, typhoid fever can lead to pneumonia, meningitis, and death.
Pertussis is a bacterial disease caused by Bordetella pertussis. It is spread through contact with the respiratory droplets of an infected person. The symptoms of pertussis include a cough that can last for several weeks, and can be very severe in young children.
Diphtheria is a bacterial disease caused by Corynebacterium diphtheriae. It is spread through contact with the respiratory droplets of an infected person. The symptoms of diphtheria include a sore throat, fever, and a thick, gray coating on the back of the throat.
Chickenpox is a viral disease caused by varicella zoster virus. It is spread through contact with the respiratory droplets of an infected person, or through contact with the fluid from chickenpox blisters. The symptoms of chickenpox include a rash of blisters, fever, and headache.
Houseflies are attracted to food and feces, and can easily spread bacteria from one place to another. They can also contaminate food with their feces, which can lead to food poisoning.