Individuals suffering from somatoform disorders often see several doctors about their symptoms because a. doctors often refer their patients for a second opinion b. their symptoms often fall under several specialties c. doctors get frustrated with them and refuse to treat them d. they are looking to find a doctor to give them a diagnosis

b hope this

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."