In a debate about the destruction of tropical wet forests, the arguments keep focussing on biodiversity and how this affects the animals themselves, as well as the ecosystem. What is one direct benefit of biodiversity to humans that you can argue to help people understand why these forests need to be preserved?
A) This diversity could contain undocumented insect species. B) The diversity could contain a new crop plant for agriculture. C) The areas could be visited by tourists for profit. D) The diversity could contain novel drugs for consumers.