Consider the following statements: 1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue. 2. Sexual transmission of Zika virus disease is possible. Which of the statements given above is/are correct?

The correct answer is (C) because the Zika virus is primarily transmitted by the *Aedes aegypti* mosquito—the same vector responsible for dengue—and it is uniquely capable of being spread through sexual contact. Option (a) is the most tempting wrong choice for candidates who might assume Zika follows the strictly mosquito-only transmission pattern of other tropical diseases like malaria. The core concept being tested is the diverse transmission mechanisms and vector characteristics of emerging infectious diseases.