Question

1. according to the article, uncontacted tribes typically:

a. wish to remain that way.
b. do not know how to make contact.
c. are not aware of the existence of the outside world.
d. are very private.

Explanation:

To solve this, we analyze the context of "uncontacted tribes". Uncontacted tribes are those who have had no contact with the outside world, so they are not aware of its existence. Option a: Wishing to remain that way is not typical (some may, but not all). Option b: Not knowing how to make contact is not the main characteristic. Option d: Being very private is not the defining trait. Option c aligns with their isolation from the outside world.

Answer:

c. are not aware of the existence of the outside world.