How does a peer-reviewed article compare to an internet blog? both are equally analyzed and evaluated by scientists in the field prior to publication. any person can easily create and publish a peer-reviewed article. a peer-reviewed article is likely to contain opinions that are not supported by data. a blog must be written by a researcher and not by a reporter. a peer-reviewed article will contain scientific jargon not easily understood by the general public.

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; ratification;

answer; all of the answers are correct;