“Coordination unifies unrelated interests into purposeful work activi…

The correct answer is Option (4) → Coordination integrates group efforts

Option (1) Coordination is an all pervasive function — Incorrect. This feature means coordination is required at all levels and in all departments, because their activities depend on each other. The quoted line is about joining interests.

Option (2) Coordination is a continuous process — Incorrect. This feature means coordination is not a one-time job. It begins at the planning stage and goes on till controlling. The quoted line says nothing about coordination going on from planning to controlling.

Option (3) Coordination ensures unity of action — Incorrect. This feature is about the purpose of coordination: all actions of all departments are aimed at one common goal. The quoted line is about how different interests are first joined together.

Option (4) Coordination integrates group efforts — Correct. Members of a group often have unrelated or different interests. Coordination joins these interests into purposeful work, so the efforts of the group get a common focus.