Which statement best describes the government outlined in the united states constitution?
a) the president is given unlimited power.
b) national power is guaranteed by article four.
c) the power of a one-house congress is provided by a bill of rights.
d) power is divided among legislative, executive, and judicial branches.

The first option is definitely false: the president and the government in general do not have unlimited power.

The third option is also false: Congress is not a one-house institution, but a two-house: the two houses are the House of Representatives and the Senate.

The correct answer is: D) Power is divided among legislative, executive, and judicial branches.  - this option is correct!