The place meant for conservation of biodiversity in their natural habitat are (i) Zoological garden (ii) Botanical garden (iii) Wildlife sanctuary (iv) National park (a) i & ii; (b) ii & iii; (c) iii & iv; i & iv

Answer is (c) iii & iv; Explanation:

In botanical garden and zoological parks species are protect outside their natural habitat and its ex-situ conservation. On the other hand Wildlife sanctuary and National park are in-situ conservation where conservation of biodiversity occurs in their natural habitat.