The correct answer is Extinct. This term is used when a species, including plants, no longer exists on Earth. Extinction can be caused by natural factors such as climate change or human activities such as deforestation and pollution. Endangered refers to a species that is at risk of becoming extinct, while native refers to a plant or animal that naturally occurs in a particular region. Hybrid refers to a plant or animal that is the result of crossbreeding between two different species or varieties.