<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A previously healthy 32-year-old male comes to the emergency department because of a high-grade fever and malaise for 3 days. He has severe generalized joint and body pains refractory to acetaminophen. He also has a severe stabbing pain behind his eyes. He returned from a trip to Taiwan 1 week ago. He is sexually active and uses condoms inconsistently. His temperature is 38.7C 101.7F, pulse is 102min, and blood pressure is 10070 mm Hg. Examination shows nontender inguinal lymphadenopathy. There is a maculopapular rash over the trunk and extremities with some sparing of the skin over his back and groin. Abdominal examination shows no abnormalities. Laboratory studies show:Hemoglobin 13.3 gdLLeukocyte count 3,900mm3Platelet count 90,000mm3SerumNa 136 mEqLCl- 103 mEqLK 4.2 mEqLUrea nitrogen 15 mgdLCreatinine 1.2 mgdLBilirubinTotal 0.4 mgdLDirect 0.1 mgdLAlkaline phosphatase 40 ULAST 130 ULALT 60 ULUrinalysis is normal. An ELISA test for HIV is negative. Which of the following measures is most likely to have prevented this patients condition?? A: Safe sexual practices, B: Mosquito repellent, C: Prophylaxis with doxycycline, D: Vaccination, E: Frequent hand washing,  <response>: This is a clinical vignette describing a patient with fever, malaise, joint pains, eye pain, rash, lymphadenopathy, thrombocytopenia, and transaminitis after returning from a trip to Taiwan. The key findings are the travel history, rash, and lymphadenopathy. This presentation is most consistent with an arboviral infection like dengue fever, which is endemic in Taiwan. The question asks what measure would most likely have prevented this infection. Mosquito bites transmit arboviruses like dengue, so mosquito repellent would be the best preventative measure in this case. Safe sex practices, prophylactic doxycycline, vaccination, and handwashing would not have prevented a mosquito-borne illness.B: Mosquito repellent 