The correct answer is - d. native, or belonging naturally to a particular region.
Indigenous is a term usually used for people, flora and fauna, in the sense that they are native for the particular region and it is their homeland. Unfortunately for the them, lots of them have been heavily affected either by migration, forced introduction of non-native species, or destroyed, so they are either on the verge of existence, or are already died out.
We can use multiple examples:
- For people; the Aborigines in Australia.
- For flora; potatoes in the Andes in South America.
- For fauna; Balkan lynx in the Republic of Macedonia.
