Question

they are organized such that the smaller structures are contained larger structures. which model best represents how the universe is organized?

Explanation:

The universe is organized such that planetary systems are part of galaxies, galaxies are part of galaxy - groups, galaxy - groups are part of superclusters, and superclusters are part of the universe. The correct model should show smaller structures nested within larger ones in this hierarchical order.

Answer:

The second model (where the universe is the outermost circle, followed by supercluster, then galaxy group, then galaxy, and finally planetary system as the innermost circle) best represents how the universe is organized.