The final solution was the nazis' plan
a.) conquer all of europe
b.) take over the united states
c.) force britain to surrender
d.) murder all of the jewish people in europe

D.) murder all of the Jewish people in Europe

Explanation:

The Nazis' plan was genocide of Jews . The Nazi's killed over 6 million Jews because Hitler thought that Jews might fight against the Nazi's. The main cause for this was antisemitism. Jews were killed in concentration camps using Zyklon B as the ' poisonous gas '.

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."

answer; developmental;