Aradiographer has recently joined your staff. you are aware that this individual has had her arrt certification revoked. realizing that your state requires certification, you speak to a supervisor about the matter. your supervisor replies that he knows but made an exception "because we are so short staffed." you

report this situation directly to ARRT.

Explanation:

According to the situation described in question, if an employee finds that radiographer's ARRT certification has got officially cancelled and inspite of that supervisor is ready to hire him due to staff shortage then , the matter should be reported to ARRT(American Registry of Radiologic Technologists) department.

American Registry of Radiologic Technologists(ARRT) department handles the certification provided by them in areas of radiotherapy, imaging etc.They will take the necessary lawful action against the radiographer for not having proper license and certification to join a job.

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."