Answer: B) Neisseria meningitidis
Explanation:
Neisseria meningitidis is a bacteria which causes disease meningcoccemia which is epidemic among adults. It is a gram negative bacteria. It causes life threatening sepsis. The bacteria is transmitted through oral sex. The bacteria transfers through saliva and respiratory secretions through kissing, coughing, and sneezing. It causes virulence by attaching to host thin finger like projections called as pilli in the intestine.