<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A previously healthy 10-day-old infant is brought to the emergency department by his mother because of episodes of weakness and spasms for the past 12 hours. His mother states that he has also had difficulty feeding and a weak suck. He has not had fever, cough, diarrhea, or vomiting. He was born at 39 weeks gestation via uncomplicated vaginal delivery at home. Pregnancy was uncomplicated. The mother refused antenatal vaccines out of concern they would cause side effects. She is worried his symptoms may be from some raw honey his older sister maybe inadvertently fed him 5 days ago. He appears irritable. His temperature is 37.1C 98.8F. Examination shows generalized muscle stiffness and twitches. His fontanelles are soft and flat. The remainder of the examination shows no abnormalities. Which of the following is the most likely causal organism?? A: Clostridium botulinum, B: Clostridium tetani, C: Neisseria meningitidis, D: Listeria monocytogenes, E: Escherichia colin,  <response>: This is a clinical vignette about a 10-day-old infant presenting with episodes of weakness, spasms, and feeding difficulties. The key findings are the age of the infant, lack of fever or other systemic symptoms, and generalized muscle stiffness and twitches on exam. The question asks about the most likely causal organism. Based on the clinical presentation, this infant likely has neonatal tetanus. Neonatal tetanus classically presents in the first 2 weeks of life with irritability, feeding difficulties, and generalized muscle spasmsstiffness without fever. The history provides clues that support tetanus - the home birth and lack of maternal antenatal vaccines, which would have provided passive immunity to the newborn. The exposure to honey raises concern for infant botulism, but this presents later and with more prominent weakness rather than spasmsstiffness. Meningitis, Listeria, and E. coli would likely cause fever or other systemic symptoms.B: Clostridium tetani 