Answer :
The answer would be C because biome has things to do with water like the ocean and wildlife
It would actually be B, economy does not determine a biome. A biome is "a large naturally occurring community of flora and fauna occupying a major habitat, e.g. forest or tundra." (Wikipedia) so, light, water, temperature and wind would determine what a biome is like. National Geographic has good articles on this if you need further explaination.