C.
tourism
Explanation:
In the Caribbean, tourism contributes 14% of the total GDP of the region. It is one of the major sector in their economy. They have a statistics of 25 million visitors which contributes $49 billion to their GDP. In the Caribbean tourism is described as the "engine of their growth ".
In fact the Caribbeans is regarded as the region that is most dependent on tourism in the world.
11% of their source of employment is from tourism whether directly or indirectly.