<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 15-year-old boy is brought to the Emergency department by ambulance from school. He started the day with some body aches and joint pain but then had several episodes of vomiting and started complaining of a terrible headache. The school nurse called for emergency services. The boy was born at 39 weeks gestation via spontaneous vaginal delivery. He is up to date on all vaccines and is meeting all developmental milestones. Past medical history is noncontributory. He is a good student and enjoys sports. At the hospital, his blood pressure is 12080 mm Hg, heart rate is 105min, respiratory rate is 21min, and his temperature is 38.9C 102.0F. On physical exam, he appears drowsy with neck stiffness and sensitivity to light. Kernigs sign is positive. An ophthalmic exam is performed followed by a lumbar puncture. An aliquot of cerebrospinal fluid is sent to microbiology. A gram stain shows gram-negative diplococci. A smear is prepared on blood agar and grows round, smooth, convex colonies with clearly defined edges. Which of the following would identify the described pathogen?? A: Growth in anaerobic conditions, B: No growth on Thayer-Martin medium, C: Growth in colonies, D: Oxidase-positive and ferments glucose and maltose, E: Oxidase-positive test and ferments glucose only,  <response>: This is a clinical vignette describing a 15-year-old boy presenting with fever, headache, neck stiffness, and photophobia. The details provided including positive Kernigs sign, CSF analysis showing gram-negative diplococci, and growth characteristics on culture media are classic for meningococcal meningitis caused by Neisseria meningitidis. The question asks to identify the test that would confirm the identity of the pathogen. Choice A regarding anaerobic growth and choice B regarding lack of growth on Thayer-Martin medium do not apply to N. meningitidis. Choice C describes nonspecific growth in colonies which does not identify the organism. Choice D describes key characteristics of N. meningitidis including being oxidase-positive and ability to ferment both glucose and maltose. This is the distinguishing feature that confirms identification of N. meningitidis.D: Oxidase-positive and ferments glucose and maltose 