C preserved bone because none of the others were enough
The stronger survived and the weaker passed on... Those with a weaker immune system had trouble with sickness and usually ended up passing on but those with strong immune systems were stronger and healthier and lived.
It doesn't necessarily mean not caring about animals at all, but believing that humans are the most important creation on earth compared to animals and the idea of God. People with this view may not be distressed so much by the extinction of certain animal species as long as their extinction did not obviously impact mankind.
