What is Richard Turere's purpose for his TED Talk? and How does he convey his purpose? (please help im so confused about this)

the answer is not b, and i don't think its a, so i choose either man's identity is found within the traditions of his ancestors   or language is a powerful tool, tell me if i was wrong or right by the way

the part where he says my friends

whats the underlined word

question 1

one of the main differences between central idea and theme is

a) theme is found when you have one main character, central idea is limited to stories with multiple characters.

b) themes are explicitly stated and central ideas are not.

c) central ideas can only be found in narrative writing, while themes can be found in multiple types of literature.

d) central idea can be found in both fiction and nonfiction texts.

question 4

when reading "nameless, tennessee", we know that we are looking for a central idea and not a theme because

a) its a short story. short stories only have a central idea.

b) its a non-fiction text. non-fiction does not have a theme, only central idea.

c) themes are directly stated and there isn't one directly stated in "nameless, tennessee".

d) all of the above.

question 6

read the excerpt.

"we had a doctor on the ridge in them days. as good as any doctor alivin'. he'd cut a crooked toenail or deliver a woman. dead these last years."

how do the details in this excerpt to develop the central idea?

a) they give insight into the doctor's motivation for people.

b) they depict the poverty and lifelessness of the town.

c) they explain why people wanted to get away from the town.

d) they reveal some of the meaningful human history of the unnamed town.