Protected areas are an example of

Which of the following serve the purpose of $ex-situ$ conservation?

The best method for the conservation of wild species of plants is:

$A$ biosphere reserve is legally protected,and no human activity is allowed in its core area. What is this area called?

What is developed for the preservation of rare genes?

Ex-situ conservation purpose is served by :-
$A.$ Zoological parks
$B.$ Wildlife safari parks
$C.$ Cryopreservation
$D.$ Biodiversity hotspots
$E.$ Sacred groves
Choose the correct option :-