Answer:
The correct answer is A) bicameral
Step-by-step explanation:
The United States congress has two legislature chambers and the States mostly follow the same pattern of having two different houses.
The only State which does not have two houses is Nebraska. Interestingly, Nebraska actually had a Bicameral legislature but was changed after a Referendum.
Despite this, the local citizens have not voiced any concerns and many believe it to be a better system that the one used in other states and by the Federal Government.