Botanical gardens and Zoological parks have
1.  collection of endemic living species only

2.  collection of exotic living species only

3.  collection of endemic and exotic living species

4.  collection of only local plants and animals

(c) Botanical gardens and Zoological parks are used to restore depleted population, reintroduce species, i.e., wild and restore degraded habitats of both exotic and endemicliving species.
Rest of the options are incorrect.