Answer: An article from a recent edition of an encyclopedia.
Explanation: Wiki and blogs are a hit or miss when it comes to having reliable information, so those aren't the most accurate sources to use. A student-run webpage about Christopher Columbus isn't necessarily a reliable source, because it only focuses on one person and not anything else. Who knows? It may even be unreliable. An article from a recent edition of an encyclopedia is reliable because the information isn't outdated and (non-wiki) encyclopedias are reliable as well.
Hope this helps! :)