Two groups of participants are given sets of training problems to solve. one group of participants is told to try to understand the structure of each problem, while the other group is asked to try to memorize the problems. they are later given test problems. based on previous evidence, what results would you expect to see at testing?

The Structure Group

Explanation:

Of the two groups, the structure group is going to solve the test problems in a better way since this group is asked to study the problem in structural form. This approach will allow the group to investigate the problem systematically and in an organized way. The group that is tasked  to memorize the problem will only remember the problems, and by memorizing alone will not help the group to find out the solution.

the first one is d and the second a

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."