The secondary source is the best description for the 21st century expert on Egyptian History writes a biography describing the life of Cleopatra, an Egyptian pharaoh who died in 30 BCE.
What is a secondary source?
This is the term that is used to refer to the documented information that is gotten from someone that did not observe the details of what happened by himself. This person is just writing based on the things hat he heard.
It would have been a primary source if Cleopatra was the one that went on to write about his life on his own. Cleopatra was one of the last Ptolemaic rulers. She was known to have ruled Egypt, parts of Libya and Cyprus. Her and her younger brothers were set to be the rulers of Egypt after power came to them. She took over power because she was much older than he was.
Hence the best description of this book would be the secondary source because the 21st century expert does not have an eye experience on the happenings of the period.
Read more on secondary source here:
https://brainly.com/question/896456
#SPJ1
