Answer:
Cut the moldy area away and throw it out because it old and if anything was by it throw it out too.
A federal government is a government where there is a separation of powers between the local governments and the federal government. Federal governments' laws have to be applied throughout the federation, but the local government can have its own laws if they don't in any way interfere with the federal law. An example of such a country is the United States of America.
A confederation is a system of government where there is a confederate government that does not bother the local governments in any way and they can have their own laws. A confederate government's regulation is within the domain of defense and support for all members of the confederation equally. An example of this is Switzerland which leans towards federal government, but also organizations like the European Union which is considered by many to be a confederation of sovereign unitary states.
A unitary government is one that is in no way divided and where a central power authority decides for the entirety of the state.This is the most common form of government and an example can be China. There are provinces but the legislature of the provinces is decided by the central Chinese government.
i don't know if this is right i'm sorry if you get it wrong
but i believe it is c (like i said i'm very sorry if you get it wrong whoever is reading this)
