Respuesta :

Answer:

1. biography

2. textbook

3. reference book

4. opinion pieces

Hope this help please give the brainliest award would be much appreciated.

Answer:

Secondary sources are works that analyze, assess or interpret an historical event, era, or phenomenon, generally utilizing primary sources to do so. Secondary sources often offer a review or a critique. Secondary sources can include books, journal articles, speeches, reviews, research reports, and more.

Explanation: