Sara lives in saudi arabia. which of the following is true of her government?
a. a supreme leader is the head of the government.
b. the government is a democracy.
c. the royal family controls the government.
d. the legal system is based on civil law

Well, Saudi Arabia is known to be ruled by the Islamic law and is also known to not be a democracy (so options B and D are wrong).

Now, the head of the govenment is the king, and he is usually not  called "the supreme leader"... this is a term rather used in Iran.

So I think that the best answer is C. The royal family controls the government.(which is true!)

A.) a supreme leader is the head of the government which is known as the "King"

Hope this helps!