Concept:Political parties are responsible for educating voters and shaping public opinion through campaigns, rallies, and media.
Explanation:Political parties organise rallies and use newspapers to reach the public.
Through these platforms, they explain their policies, programmes, and visions.
This helps citizens understand political issues and make informed choices.
Such activities are part of political socialization.
Pressure groups, the clergy, and the educated elite do not primarily perform this broad educational role.
Therefore, the correct option is political parties.
Answer:A. political parties