Question

look at the chart.
which enlightenment concept does this chart illustrate?
popular sovereignty
social contract
natural rights
separation of powers

Explanation:

The chart shows the Constitution dividing power into Legislative, Executive, and Judicial branches. The Enlightenment concept of "separation of powers" (proposed by Montesquieu) involves dividing government power into distinct branches to prevent tyranny, which matches this structure. Popular sovereignty is about people’s rule, social contract is about government - people agreement, and natural rights are inherent human rights—none match the branch - based power division here.

Answer:

separation of powers