GMAT Critical Reasoning (CR) | Re: The vast majority of countries that have a single political party

Political theorist: The vast majority of countries that have a single political party have corrupt national governments, but some countries with a plurality of parties also have corrupt national governments.What all countries with corrupt national governments have in common, however, is the weakness of local governments.

If all of the political theorist’s statements are true, which one of the following must also be true?

(A) Every country with weak local government has a single political