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.
In the dead of night, the sound of a drum and a cannon announce the death of ezeudu had warned him against playing a part in the killing of ikemefuna.
I think it could happen because the girl (don't remember their names sorry) snuck onto the ship where she wasn't supposed to go. Obviously if you do something wrong, no necessarily sneaking onto a spaceship, there are always consequences. The man did try to save her life, but there wasn't much he could do because it was too late for both of them to survive.