The goal is to establish a strict hub-and-spoke topology for VPN2, ensuring that communication is allowed only between the hub and spokes, and disallowing direct communication between spokes. The correct control policy should match routes specifically within VPN2 and allow those routes only if they involve the hub sites. Any other routes should be rejected to ensure no direct spoke-to-spoke communication. Option A achieves this by allowing routes involving the hub sites and rejecting other routes within VPN2, thus enforcing the desired topology.