Dr. Kfir conducted a study that involved administration of the same scale at two different times approximately one month apart. Dr. Kfir noticed that the participants' scores on the second administration were much higher than the first administration, which suggested greater familiarity with the questions and tasks. This greater familiarity may lead participants to answer how they believe Dr. Kfir wants them to and may be an example 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; community based corrections;

a. he allowed the people he conquered to keep their customs and religions.

he captured babylon and freed the jewish people to return to judah.