Answer: B. social loafing.
Step-by-step explanation:
As a college student or indeed just a student, you have probably seen this happen a lot.
This action is known as SOCIAL LOAFING. It is described as someone putting in less effort in a group as opposed to working alone. They are content with letting others do work for them and this has been known to damage the effectiveness of groups.
Lillie's team members who seem uninterested and content to let others do their share of the work are engaging in Social loafing.