A unitary system of government, or unitary state, is a state governed by a single entity. A confederate government system is a relationship (sometimes loose) between a smaller number of political units. More of an agreement than anything. Finally a federal government is a system that divides power between a strong national government and smaller local government.
All three of these are completely different things.
Answer:A
Explanations I googled it
1. economically
2. race
3. sex
4. look
D is the answer to your question. i think.
