If a person becomes a manager on the basis of experience but has no formal management degree what becomes clear?

Correct answer: Entry in management is not completely restricted

The direct answer is D: entry into management is not completely restricted. Management is an occupation with useful theories, skills, and training, but unlike some legally regulated professions, a particular management degree is not compulsory for every managerial job. Step by step: the person gains practical experience; the organisation considers that experience sufficient for appointment; no formal management degree is held; therefore formal qualification is helpful but not an absolute entry barrier. Option D is correct and reflects the textbook view that management has only partial, not complete, professional status. Option A is wrong because lack of a degree does not mean management has no knowledge. Option B is wrong because management does not require every entrant to pass one compulsory route. Option C is wrong because service motive is a separate feature and is not proved by the fact given. A useful caution: this does not mean education is unnecessary; it means entry is not fully closed to experienced people.