Concept:Sources of power are the recognised bases from which a person or group can exercise control or influence over others.
Explanation:Charismatic power arises from a leader's personality, charm, and personal attraction.
Legitimate power is derived from a formal position, law, or recognised authority.
Expert power comes from specialised knowledge, skills, or competence.
In standard political and organisational analysis, all of these are accepted as direct sources of power.
Ideology, however, is simply a system of beliefs and ideas that guides political action.
It is mainly an instrument of persuasion or influence, not a direct source of power in the classical sense.
Therefore, the exception among the options is ideological power.
Answer:A. ideological power