Ans. is ‘b’ i.e., Neisseria gonorrhoeae
* In the given smear, gram-negative (red colored) diplococci within the polymorphonuclear leucocytes – characteristic of N gonorrheae.
* Neisseria meningitidis, often referred to as meningococcus, is a Gram-negative bacterium that can cause meningitis and other forms of meningococcal disease such as meningococcemia, a life-threatening sepsis.
* meningitidis is a gram-negative β proteobacterium and member of the bacterial family of Neisseriaceae.
* N. meningitidis is a fastidious bacteria, dying within hours on inanimate surfaces, and is either an encapsulated or unencapsulated, aerobic diplococcus with a “kidney” or “coffee-bean” shape