Mnemonic anchor: Aedes carries the dengue, chikungunya and Zika triad, so the moment Zika is named, think Aedes (mainly Aedes aegypti and Aedes albopictus). Match each mosquito to its disease to clear the field: Culex transmits Japanese encephalitis, West Nile and filariasis, so option 2 is wrong, and Anopheles is the malaria vector, so option 3 is wrong. Because Aedes is clearly the established vector, option 4 (none of these) is also incorrect. Beyond the mosquito bite, Zika is notable for sexual and vertical (mother-to-fetus) transmission causing microcephaly, but the vector asked for is Aedes, option 1.