Answer:
a
Explanation:
it is not a complete sentence
It is part of human nature. The drive to become rich, and to take the gold, is the whole reason that the dwarves started off in the first place. They were greedy for the wealth. They were blinded to the position that they were in. Even when Bilbo took the Arkenstone Thorin didn't pay attention, and turned his back on him.
The type of claim this author is making is: Claim of policy. Why? Because what this type of claim asserts is that something should or should not be done. A key here is the verb<em> "should"</em>. In this case, the claim from this historical essay would be <em>"Washington, D.C., should not become the 51st state".</em>
The type of evidence the author should use to best support the claim would be a judgement evidence since there is nothing in history which prove this assumption to be true. However, he is making an assumption using his judgements that he will need to explain and argue afterwards.
Example: The investment for the capital would be distributed among the other cities and towns of this supposed 51st state.