The best synthesis of the impact of diverse government structures on society and human rights is:
C) Government structures that offer strong protections for human rights create stronger social institutions and more freedom in society whereas government structures that offer weak protections for human rights create unequal societies.
This option aligns with the distinction made in the excerpt between democracies (which protect human rights and promote citizen involvement) and totalitarian or theocratic regimes (which suppress participation and violate rights).