The correct option is C Poaching animals
Poaching is a serious case of human interference which is disturbing the biological equilibrium. Poaching has serious effects on existing animals, environment and local communities. Wildlife gets drastically reduced or even becomes extinct. When one animal population changes or becomes extinct, all other parts of the ecosystem are affected as the rate of specific predators versus prey will change. Animals are hunted for their products for example, elephants are poached for ivory(obtained from their tusks), crocodiles for leather and tigers and lions for their fur.