When conducting research, four reliable sources among the options provided are:
- Electronic textbooks - These are often peer-reviewed and published by reputable academic institutions or publishers.
- Legal documents - These are official records and can provide reliable information, especially in legal and governmental research.
- Scholarly journals - These are considered highly reliable as they typically involve peer review and are published by academic institutions or professional organizations.
- Local newspapers - While they can vary in reliability, established local newspapers that adhere to journalistic standards can provide credible information, especially regarding local issues.
Social media and personal blogs generally lack the rigorous fact-checking and review processes of the other sources, making them less reliable for academic research.