Syphilis is caused by

A) Candida albicans.
B) Trichomonas vaginalis.
C) a virus.
D) Treponema pallidum.
E) genital warts.

Treponema Pallidum

The bacterium responsible for syphilis, a sexually transmitted infection that can have serious health consequences if not treated.

Candida Albicans

A common fungus that can cause infection in humans, often in the form of thrush or candidiasis.

Virus

A microscopic infectious agent that can replicate only inside the living cells of an organism, often causing disease.