Answer:
a. China ⇒ Communist Totalitarianism
China is a former communist country turned in to socialist, but still not democratic. The communist party still rules the country at will without opposition.
b. United States ⇒ Representative Democracy
The US is the oldest modern democracy that still remains in the world. Other countries have older democratic institutions, but the country was not completely democratic, e.g. Parliament existed for centuries in England, but England became a democracy in 1918. The US is considered a representative democracy.
c. Zimbabwe ⇒ Tribal Totalitarianism
Zimbabwe is ruled by a military dictator.
d. Italy in the 1930s ⇒ Right-wing Totalitarianism
Benito Mussolini ruled Italy in the 1930s. He was a fascist dictator that allied with Adolf Hitler during WWII.
e. Saudi Arabia ⇒ Theocratic Totalitarianism
Saudi Arabia is a monarchy where the royal family rules at will without any opposition.
f. France ⇒ Social Democracy
France is considered a social democracy since its last governments have followed socialist ideals through democracy.