Which statement is true about the u. s. constitution? it establishes a federal government with unlimited power. it explains the organization of state government. it explains the organization of the federal government. it forbids the basic principles of government to be amended.

The U.S. Constitution refers to the Constitution of the whole country, not the individual states, so  the second option can't be the right one. Also, the power is limited and there is a way to have amendments, so the right answer is this one:

It explains the organization of the federal government

The united states constitution explains the organization if the federal government.