Linda always feels threatened and anxious-imagining something awful is about to happen. She is able to work and care for her family, although not as well as she would like. Linda is probably experiencing:

answer; ///the declaration of independence;

think its caste system

explanation:

what organizations did you select

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."