The correct option is C Habitat as well as inter-relations
Niche is the role a species plays in a community including the habitat of the organism, the diet of the organism. the role it plays in the community , its relationship with other organisms etc. therefore, the niche would represent the habitat as well as inter relations of the organism with other organisms. It cannot include the climate or the microhabitat of the species. So, the correct answer is 'Habitat as well as inter-relations'.