the main difference between a nation and state is that a nation is\no a political unit within a state.\no an…

Answer:

B. an imagined political community.

Brief Explanation:

A nation is often seen as an imagined community as per Benedict Anderson. It's a group of people who see themselves as a collective, sharing commonalities like culture, history, etc., not necessarily a political unit within a state, a territory with one ethnic group, or an autonomous country.