The correct option is D Pneumonia
The term pneumonia refers to pulmonary infections, caused by viruses and bacteria. The most commonly known bacteria is Diplococcus pneumoniae. It generates an inflammatory condition in the lungs and affects the respiratory tract, sinuses and nasal cavity. The methods of transmission include sneezing, coughing and direct contact with an infected person. On the other hand, dengue, malaria and encephalitis are mosquito-borne diseases, transmitted by several species of mosquito. So, the correct answer is option D.