It's subordinate. Meaning that it is dependent on the main clause.
Answer:
The 1st one
Explanation: I took the test
The answer is familiarity reasoning. Familiarity reasoning is the process of using what is more familiar to make interpretations, explanations, or inferences about what is less familiar. On the other hand, comparative reasoning is using two objects or situations to come up with a certain interpretation or explanation. And simplistic reasoning is a kind of reasoning that is true and straight to the point by not telling the listeners what they want to hear, but instead, telling them what is true.
Answer: People from Eastern Europe immigrated to the U.S. because...
Explanation: This would probably be the easiest way to restate the following question. It's simple and not confusing.
