Option 1 states that public opinion is the opinion of the majority. This means that when we talk about public opinion, we are referring to the opinion that is held by the larger group or the majority of people. It suggests that public opinion is determined by the views, beliefs, and preferences of the majority of individuals in a given society or community.

Option 2 states that public opinion is the opinion of the people on political matters. This implies that public opinion is specifically related to political issues and includes the collective views and preferences of individuals regarding political decisions, policies, and governance.

Option 3 states that public opinion is the opinion of the citizens of the country. This option emphasizes that public opinion is the perspective and viewpoint of the citizens who are part of a particular country or nation.

Option 4 states that public opinion is the opinion based on reasoning which is for the welfare of the whole society. This suggests that public opinion is formed through logical reasoning and is focused on promoting the well-being and welfare of the entire society.

The correct answer is option 1, as it provides a broader definition that encompasses a larger group of people rather than being limited to specific topics or reasoning.