Answer:
Academic Journals, Research papers from experts.
Explanation:
1. Blogs
Blogs are generally NOT reliable sources as they tend to be personal statements without any real academic background. You can read them for perspective on an issue, but ensure to get your facts from other sources!
2. Academic Journals
Are GREAT sources! The articles in journals tend to be peer-reviewed, meaning they undergo a rigorous process of editing and checking by experts - ensuring the research is not biased and the facts are trustworthy! This is likely the most reliable source in your list.
3. Research Papers by EXPERTS
Also awesome sources. The credentials of the author are often a good indicator of the reliability (ie. if a PhD wrote the paper). They may not have always been peer-reviewed, but if the credentials line up or they are published from a trustworthy source these can be an excellent source of information.
4. Students/Peers
Are NOT experts in the field! Do not cite their work. They may have great grades in the course, but are not a direct source of information.