Scholarly materials: tend to have flashy visuals and colorful graphics. don't require peer review. don't usually have citations. include information on the researcher's process or methods.

Scholarly materials: include information on the researcher's process or methods.

Explanation:

Scholarly materials or sources are also known as academic, refereed or peer-reviewed sources. As those names suggest, scholarly materials are written by academics or experts in a certain field. They are supposed to be peer-reviewed in order to be validated. They must contain citations as a form of evidence when mentioning literature and other sources. They tend to have more sober visuals, since their purpose is to inform instead of to entertain or attract the general audience. Finally, they must include information on the researcher's process or methods. As we can see, we can eliminate the first three options and choose the last one as the correct answer.

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; dr.black,who allows only certain individuals to mate;