The correct option is D The habitat and specific functions of a species
A niche of a species includes all the interactions of a species with the biotic and abiotic factors of its environment. This interaction is the specific function of a species. Biotic factors are living things, while abiotic factors are nonliving things. Habitat comes under abiotic factor. Hence the niche of a species is meant for habitat and specific functions of a species. Thus the correct answer is option C.