Answer:
The correct answer will be option-Poaching
Step-by-step explanation:
Poaching is the illegal killing, shooting and trapping the animals in an area where such practices are completely forbidden.
Poaching is a threat to wild animals as it is one of the major cause of the loss of biological diversity on Earth as it leads to the loss of the wild animals which can make the species threatened species.
Since poaching occurs when something valuable is possessed by the animal-like elephants possess their tusks which are made of ivory.
Thus, poaching is the correct answer.