Oxygen available from nature belongs to which biodiversity conservation category?

$(i)$ Sacred groves $(ii)$ Hot spots $(iii)$ National park $(iv)$ Wild life safari park $(v)$ Seed bank $(vi)$ Biosphere reserve. Select the correct answer from the options given below $:-$ $(a)$ $i, ii, iii, vi$ are the examples of in-situ conservation. $(b)$ $iv, v$ are the examples of ex-situ conservation. $(c)$ $ii, iv, v$ are the examples of ex-situ conservation. $(d)$ $i, ii, iii, iv, vi$ are the examples of in-situ conservation.

What is common to the species shown in figures $A$ and $B$?

Suggest a place where one can go to study coral reefs,mangrove vegetation,and estuaries.

In-situ conservation refers to:

Which is not related to the Ex situ conservation?