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Which of the following is the most credible source on an informative research paper?

1) a published encyclopedia article
2) a blog written by a NASA scientist
3) a wiki on space travel with secondary sources
4) a letter to the editor in a printed national newspaper

User Xvan
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1 Answer

3 votes

Answer:

your answer i s#2

Step-by-step explanation:

User Akanevsky
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