The most logical and well-reasoned set of statements is:
Residents of Washington, DC, are U.S. citizens who are denied representation in Congress because Washington, DC, is not a state. Representation is a right of all citizens that our founding fathers fought for. So, Washington, DC, should be made a state.
This argument is grounded in the principle of democratic representation, linking the denial of political rights to the status of DC as a non-state. It argues for a change in status based on the foundational ideals of representation in the U.S. This reasoning is clear and provides a logical conclusion that directly addresses the issue of representation for the residents of Washington, DC.
The other statements present premises that either do not logically lead to their conclusions or conflate separate issues in a way that diminishes the strength of their arguments.