Which of the following is a primary source?

When a researcher has conducted an original experiment and reports the results, findings, and associated conclusions in a research report, that report is considered a primary source. Academic textbooks, journal articles, articles in other periodicals, and authoritative databases may all be primary sources. When an academic textbook cites research by others, that citation is considered a secondary source as it refers to information originally presented by others. When a news article quotes a researcher's writing, that is also a secondary source.