The correct answer would be option B, Social Loafing.
Amanda ends up getting the same grade as the other group members. This is an example of Social Loafing.
Explanation:
When people work in group, the individuals usually exert less effort as compared to the effort they put if they work alone. This phenomenon is called as the Social Loafing.
In Social Loafing, people working in groups are more dependent upon others and feel less responsibility of work. They share less efforts and seek equal reward. That is why, group's efficiency is usually seen low.
So when Amanda put least effort in the completion of the project and got the same grades as of the other group members, this is called as Social Loafing.
Learn more about Social Loafing at:
brainly.com/question/8001474
#LearnWithBrainly