Which means of influencing and changing government policies is NOT likely for individuals in a constitutional democracy? 

A)  by participating in grassroots activities 
B)  by a coup d'état 
C)  by whistle-blowing 
D)  by education and persuasion

Coup d'état

A sudden and illegal seizure of government power by a small group, often military, displacing the existing government authorities.

Constitutional Democracy

A system of government where laws and policies are made within the framework of a constitution, and the power is exercised directly or indirectly through elected representatives.

Grassroots Activities

Grassroots Activities refer to actions and initiatives taken by local, ordinary people rather than those led by political or commercial organizations, often aiming at social or political change.