This depends entirely on the research project in question. For instance, if you want to learn more about how the memorial was constructed, you could look at the history of its architecture, etc. Or if you want to know more about how it was conceived you should look at the debates surrounding it's creation.
A. Vargas returned with settlers
Explanation:
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Sorry this is To hard for me
The answer would be choice C) Columbus believed the Earth was smaller than it actually is.