<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A homeless 45-year-old man presents to the emergency room in December complaining of malaise, body aches, chills, and fever. He reports that his symptoms started 4 days ago. His myalgias and chills have begun to resolve, but now he is starting to develop a dry cough, dyspnea, and a sore throat. He does not have a primary care provider and has not had any vaccinations in over 2 decades. He receives medical care from the emergency room whenever he is feeling ill. His temperature is 103F 39.4C, blood pressure is 13070 mmHg, pulse is 115min, and respirations are 22min. On exam, he appears fatigued with mildly increased work of breathing. A chest radiograph is negative. A nasopharyngeal viral culture is positive for an orthomyxovirus. Upon further review of the patients medical record, he was diagnosed with the same condition 1 year ago in November. Which of the following mechanisms is responsible for pandemics of this patients disease?? A: Complementation, B: Phenotypic mixing, C: Reassortment, D: Recombination, E: Transduction,  <response>: This is a question about the mechanism responsible for pandemics of influenza. The patient is a homeless man who presents with flu-like symptoms in December. He had a similar illness the previous November. Key details are that he has an orthomyxovirus infection, it recurs seasonally, and can cause pandemics. Orthomyxoviruses include influenza viruses, which can undergo reassortment when two different influenza strains infect the same host cell. Reassortment can result in novel influenza strains to which the population has no prior immunity, allowing for rapid spread. The other answer choices describe genetic mechanisms of other viruses, but not influenza. Therefore, the mechanism responsible for influenza pandemics is reassortment.C: Reassortment 