Eva just upgraded her software package. However, even though the updated version contains a number of more efficient methods for working with files, Eva continues to work with files the way she did before the upgrade. In this case, Eva is showing evidence of_

In this case, Eva is showing evidence of mental set

mental set

Explanation:

From the question, we will be working with the information on Eva's mentality after changing things that she is used to before, that is to say her software package which she upgraded and yet she(Eva) works like she is working on the out dated software. This kind of mentality is known as mental set that is to say, when someone is seeing things in the old ways or perception despite the fact that there have been changes in the old ways or perception which is the same thing that happened to Eva in the question, Eva's mentality is already set.

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."