Final answer:
Among the options provided, databases, electronic archives, online libraries, and spreadsheets are examples of data sources used for research or academic purposes. Central processing units and folders are not considered data sources; CPUs are processors and folders are organizational tools.
Step-by-step explanation:
The question asks for examples of data sources that might be applicable for research or academic work. The options given include various tools and platforms where information and data might be available. Let's examine which of these are indeed examples of data sources:
Databases: Yes, databases are structured sets of data held in a computer, especially one that is accessible in various ways. They are crucial for finding articles, reports, statistics, and more.
Electronic archives: Yes, these include digitized collections of documents, records, or other materials that are preserved for historical, cultural, or informational purposes.
Folders: While folders can contain data, they are more of a method for organizing data rather than a source of data itself.
Online libraries: Yes, an online library is a vast source of digital documents and media, including scholarly journals, books, and databases.
Spreadsheets: Yes, spreadsheets are data sources that contain organized columns and rows of information, commonly used for statistical or financial analysis.
Central processing units (CPUs) are not data sources; rather, they process instructions from software and carry out computer programs' tasks.