The best definition of unicameral is a government with one legislative body, hence the word "uni". The United States had a unicameral type of legislature but was later changed because all the states had the same number of representations, even though a state has a low or high amount of population. The United States changed from a unicameral to a bicameral legislature, which is composed of the Senate and the House of Representatives.
The correct answer is C. hope this helps.
Unconstitutional, as it causes the government to become entangled with religion