How is a representative democracy similar to a constitutional monarchy? prime ministers are appointed. b) lawmakers inherit government office. c) the monarch is the head of government. d) the power of the government is limited.

I think it's D. The power of the government is limited. 

Why? Because a constitutional monarchy relies on a plan of government to work, and so there's not an excess or abuse done by the monarch. Same thing with a representative democracy, the legislative assembly has the same procedure as well.

D. The power of the government is limited. 

A representative democracy is when the people are allowed to vote for their leaders to serve for them in the government such as electing the President. A constitutional monarchy is when a monarch is held back by the law and Parliament.