Ais a place that is strictly controlled in order to protect a species from extinction.
a. wilderness
b. wildlife sanctuary
c. zoo
d. conservatory

b. wildlife sanctuary

It is true that conservation efforts have resulted in restoration of some wildlife habitats. Since some animals, over the change of time and of human’s abusive efforts,  could no longer live, the governmental an non-governmental organizations and volunteers are now doing ways to alleviate the said problem and so far it has been effective as som species close to extinction was saved (e.g. platypus).