The correct option is
B a - r, b - t, c - p, d - q, e - s
- Haemophilus influenzae is a Gram-negative, coccobacillary, facultatively anaerobic pathogenic bacterium It is the major cause of flu. It causes upper respiratory tract infections.
- Entamoeba histolytica is an anaerobic parasitic amoebozoan predominantly infecting humans and other primates causing amoebiasis (amoebic dysentery).
- Plasmodium falciparum is a unicellular protozoan parasite of humans and the deadliest species of Plasmodium that cause malignant malaria (an intermittent and remittent fever) in humans.
- Wuchereria bancrofti is a human parasitic roundworm that is the major cause of lymphatic filariasis (Elephantiasis).
- Salmonella is a genus of rod-shaped (bacillus) Gram-negative bacteria. Salmonella typhi causes typhoid fever.
So, the correct answer is 'B'.