The Song Dynasty 4) When did the Tang Dynasty rule China? Why was the time period called the Golden Age of Ancient China?

5) Who declared himself as emperor and established the Tang Dynasty?

6) What was one of the most important inventions during the Tang Dynasty? Why was this invention important?

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; consonant;

answer; omb;