Which system grants sovereignty solely to noncentral governments, thereby making the central government dependent on them?

The correct answer is D. Confederation system.

A confederation system is a form of governance where independent states or regions come together to form a union, but most of the power and sovereignty remain with the local or noncentral governments. The central or federal government has limited authority and is dependent on the agreement and cooperation of the member governments. This contrasts with a federal system, where power is shared between central and local governments.