Which of the following are considered "credible sources"?

*
materials published within last 10 years
research articles written by respected and well-known authors
websites registered by government and educational institutions (.gov, .edu, .org)
academic databases
all of the above

All of the above are considered credible sources.

All of the above options can be considered credible sources:

1. Materials published within the last 10 years: Generally, newer materials are preferred as they usually contain the most up-to-date information and research.

2. Research articles written by respected and well-known authors: Articles written by reputable and established authors are considered credible as they have expertise and a track record of producing reliable research.

3. Websites registered by government and educational institutions (.gov, .edu, .org): Websites ending in .gov (government), .edu (educational institutions), and .org (non-profit organizations) are typically considered reputable sources as they often provide reliable and factual information.

4. Academic databases: Academic databases, such as JSTOR, PubMed, and Google Scholar, are widely accepted as credible sources as they host peer-reviewed scholarly articles and research papers that have undergone rigorous scrutiny and evaluation by experts in the field.

Remember, it is always important to critically evaluate the sources you use to ensure their credibility and reliability.

All of the options mentioned - materials published within the last 10 years, research articles written by respected and well-known authors, websites registered by government and educational institutions (.gov, .edu, .org), and academic databases - can be considered credible sources.