Question

syphilis is caused by
a herpes simplex
b neisseria gonorrhaeae
c treponema pallidum
d human papillomavirus

Explanation:

Syphilis is a sexually transmitted infection. Herpes simplex causes herpes. Neisseria gonorrhoeae causes gonorrhea. Human papillomavirus causes genital warts and some cancers. Treponema pallidum is the bacterium that causes syphilis.

Answer:

C. Treponema pallidum