Please help with my races strategy will give brainlist (Please follow the sentences rules)

where is the question? I don't see it...

the values of the selma marchers was to bring   their ability to vote into law. mlk was not hat march, which was protesting toward lbj

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."