In what decade was the Mosquito Research Control Unit established in the Cayman Islands?

The Mosquito Research Control Unit (MRCU) was established in the 1960s in the Cayman Islands as a response to the growing concerns about mosquito-borne diseases and the impact of mosquitoes on public health and tourism. During this period, efforts to control mosquito populations became increasingly important due to the rising number of cases of diseases such as dengue fever, which affected both the local population and tourists.

The establishment of MRCU marked a significant step in implementing scientific measures for mosquito control, including the use of aerial spraying and research into mosquito biology and behavior. The unit's work has been crucial in protecting the health of residents and visitors while also supporting the tourism industry, which is vital to the Cayman Islands' economy.

In comparison, the other decades listed do not align with the historical timeline of the MRCU's establishment, hence they are not correct.