Asource that is written or created by a person who experienced an event personally is called a

a. secondary source
b. biased source
c. credible source
d. primary source

Primary Source. Primary source is when the source was recorded by someone who has had first-hand experience with the event. Some examples include diaries and photographs.

The correct answer is D Primary source

Primary Sources are immediate, first-hand accounts of a topic, from people who had a direct connection with it. Primary sources can include:

Texts of laws and other original documents.

Newspaper reports, by reporters who witnessed an event or who quote people who did.

Speeches, diaries, letters and interviews - what the people involved said or wrote.

Original research.

Datasets, survey data, such as census or economic statistics.

Photographs, video, or audio that capture an event.

answer; i believe that the correct answer is (chronological order);

the steam engine.

the locomotive.

the telephone.

the telegraph.

the internal combustion engine.

the rifle.

ironclad ships.

electricity/light bulb.