The correct answer is - c. Creole.
The Creole languages are complete languages used in every sphere of the life of the people in a certain country or region. The Creole languages in the Caribbean region emerged after the colonization of the region by the Europeans. As the European influence was becoming bigger, the natives started to lose their primary language and mix it with the newly established languages, mostly the English, Spanish, and French.
Than the Europeans brought African slaves with them, and the already mixed languages, mixed even more, so it became a combination of native languages, European languages, and African languages.
There's lots of Creole languages, and not all of them are well documented, but for a fact, the most spoken one is the Haitian Creole.
