Pliasess 2. It is the conversation of two or more people to exchange ideas or reach agreements: *

Warlike

Dialogue

Ethnic.

a) which ethnic groups live in this community?

i just took test

which sentences ? that question is incomplete

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail