Unlike a primary source, a secondary source can be: a. written or created by a person suspected of having a bias. b. written or created by a government organization. c. written or created by an educated person or trained expert. d. written or caused by someone who did not experience an event.

The correct answer is D. Written or caused by someone who did not experience an event.

Explanation

A primary source is a set of records left by humans who have lived at some particular point in history and experience the events they describe, for example, we have records of prehistory with pictograms and paintings of nomadic communities or texts from the first civilizations through hieroglyphs and other primitive languages. On the contrary, the secondary sources are documents written by individuals who did not experience the events they describe or lived during the historical period they write about but who decided to use the information found in primary different primary sources and based on it write a new source. So, the correct answer is D. Written or caused by someone who did not experience an event.

explanation:

the president, prime minister, chief justice, speakers and ministers take their oath of office. the oath is taken in bengali