When we say that the Pink Headed Duck is extinct, we mean that:
Non living member of the species exists
No living member of the species exists in the wild
There is only one living member of the species
The species will definitely disappear in less than 5 years
When a species goes extinct, there is no member of its species left in the world.
Botanical gardens and Zoological parks have
(a) collection of endemic living species only
(b) collection of exotic living species only
(c) collection of endemic cand exotic living species
(d) collection of only local plants and animals