Which one of the following is a bacterium that causes disease in the h

Which one of the following is a bacterium that causes disease in the human body ?

Varicella zoster
Trypanosoma gambiense
Salmonella typhi
Plasmodium falciparum
This question was previously asked in
UPSC NDA-2 – 2019
The correct option is C) Salmonella typhi.
The question asks to identify a bacterium from the given options that causes disease in humans.
Salmonella typhi is a rod-shaped, Gram-negative bacterium that causes typhoid fever in humans. Varicella zoster is a virus (causes chickenpox and shingles). Trypanosoma gambiense is a protozoan (causes African sleeping sickness). Plasmodium falciparum is a protozoan (causes malaria).