Marwan would like his partner, julia, to him with a self-treatment for premature ejaculation. because marwan is uncomfortable talking about this with julia, he asks her to read the pamphlet about the treatment before they discuss and attempt it. marwan is using the communication strategy of

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/// playing;