Which would be an example of a primary source?

1. diary
2. textbook
3. biography
4. online encyclopedia

1. diary

The example of a primary source would be 1. diary.

The example of a primary source would be a diary (option 1).

To determine if a source is a primary source, we need to understand what primary sources are. Primary sources are original materials or documents created at the time of an event or by someone who experienced it firsthand. They provide direct evidence or firsthand accounts of events, activities, or conditions.

In the case of a diary, it is a personal record of someone's thoughts, experiences, or observations, usually written during the time of those experiences. As it is created by the person themselves, it is considered a primary source because it offers direct insights into their thoughts, experiences, and perspectives.

On the other hand, options 2, 3, and 4 (textbook, biography, and online encyclopedia) are not primary sources. Textbooks compile information from various primary and secondary sources to provide an overview or analysis of a particular subject. Biographies are accounts of someone's life written by another person, typically using primary and secondary sources. Online encyclopedias collate information from various sources and present it in an organized manner, but they do not provide direct, firsthand accounts.

Remember, when determining if a source is primary or not, it's important to consider if it was created during the time of the event or by someone who experienced it firsthand.