The correct option is A Habitat Destruction
An endangered species is a type of organism that is threatened by extinction. Species become endangered for two main reasons: loss of habitat and loss of genetic variation. Habitat loss is possibly the greatest threat to the natural world. Every living thing needs somewhere to live, find food and reproduce. This is known as its habitat. In order for a species to be viable, its habitat must have sufficient territory, necessary food and water and a range of necessary physical features.