Answer:
Social loafing
Step-by-step explanation:
Social loafing describes a phenomenon whereby an individual does not put in much effort to achieve a particular goal when they are part of a group.
People who exhibit this type of behaviour put in much more effort when carrying out individual activities, being part of a group makes them less productive.
When certain individuals in a group are seen as inactive members, there tends to be a split of of the group due to the fact that some are contributing while others are not contributing anything to the success and growth of the group.