This is in Active Voice, because of words like "to add" and "put".
Answer:
Species which are not globally extinct are termed extant. Those species that are extant, yet are threatened with extinction, are referred to as threatened or endangered species.
Explanation:
Hope this helps!
Since my family members participate in D, that's my very biased answer.
C is part of that
B is not correct. What will the drawings do? That too can become part of D, but D is the best way to show your concern.
A is the second best answer, but petting zoos are very narrow in what they preserve.
D <<<< ===== answer.
