Explanation:

3rd option is correct.
Dengue fever is a mosquito-borne tropical disease caused by the dengue virus. Symptoms typically begin three to fourteen days after infection.
Poliomyelitis (polio) is a highly infectious viral disease, which mainly affects young children.
Swine flu is a respiratory disease caused by influenza viruses that infect the respiratory tract of pigs and result in a barking cough, decreased appetite, nasal secretions, and listless behavior; the virus can be transmitted to humans.
In case of AIDS, the virus can be transmitted through contact with infected blood, semen or vaginal fluids.
Japanese encephalitis (JE) is a disease spread through mosquito bites. Symptoms usually take 5-15 days to develop and include fever, headache, vomiting, confusion, and difficulty moving.