✅ A) Informal communication spreads info quickly → informal communication works outside official channels, allowing faster information flow
✅ B) Fulfills social needs → This enhances their job satisfaction since it gives them a sense of belongingness in the organisation -> This describes social benefits of informal organization.
✅ C) Compensates for formal gaps → This describes how informal organization supplements formal structures.
D) Maintains command unity → established hierarchy -> characteristic of formal organization, not informal organization. Informal organizations typically operate outside established chains of command.
Answer is: 2 (A, B, C only).