Final answer:
Non-reliable sources for research papers are typically those without clear authorship or authority, such as Wikipedia and blogs, whereas major newspapers and databases like LexisNexis Academic are considered credible. The correct answers are: c. wikipedia blogs and d. blogs lexis nexus academic.
Step-by-step explanation:
A non-reliable source for a research paper is one that lacks credibility, trustworthiness, and scholarly rigor. When conducting research, it's essential to differentiate between authoritative and potentially biased or unsubstantiated sources. Major newspapers such as the New York Times, the Wall Street Journal, and others are generally credible due to their reputation and editorial processes.
However, sources like Wikipedia, blogs, and websites with unclear authorship or a distinct agenda can be less reliable. While these sources can sometimes be used to find additional references or keywords, they should not be used as the main evidence to support research claims.
LexisNexis Academic, on the other hand, is a highly credible source as it aggregates content from credible publications and is widely used in academic research.