The correct option is (a) typhoid.
Explanation:
Salmonella ,typhi causes typhoid fever. The incubation period is about two weeks. The patient first suffers from high fever of 40o C and continual headache. Polio, TB and tetanus are caused by polio virus, Mycobacteilum tuberculosis and Clostridium ,tetani respectively. Polio is being eradicated by polio vaccine. TB and tetanus can be cured by antibiotics.
