Which circumstance is likely to damage group cohesion?

Group cohesion refers to the bonds that connect members of a group and influence their commitment and cooperation towards shared goals. A member leaving without explanation can significantly disrupt this cohesion, as it creates uncertainty and can lead to feelings of abandonment or confusion among those who remain. The departure of a member without discussion can also create a lack of closure and may lead to distrust or concern about the stability of the group, affecting morale and cooperation.

In contrast, when all members contribute equally, active participation, or the introduction of new members occurs, these situations typically enhance engagement and integration within the group. Equal contribution fosters a sense of fairness and shared responsibility, while active participation strengthens relationships and collaboration. Similarly, new members can bring fresh perspectives and energy, creating opportunities for growth and learning within the group. Thus, the departure of a member without explanation stands out as the most detrimental circumstance likely to undermine group cohesion.