The correct option is D include a collection, cultivation and display of a wide range of plants
A Botanical Garden is a collection, cultivation and display of a wide range of plants labelled with their botanical names. Ex situ conservation involves conservation of plants and animals in artificial habitats, which are quite similar to the normal habitats of these organisms. Botanical Gardens provide ex situ conservation of germplasm, and are uniquely positioned to help address the issues relevant to restoring ecosystems. They provide knowledge and expertise in plant taxonomy.