Respuesta :
I think it's B, C and E. The source seems to be credible, factual and is a secondary source.
The correct answers are B) credible. C) factual. D) secondary.
The descriptions that characterize this source are credible, factual, and secondary.
In this excerpt of "The First World War: A Complete History,"
Professor Martin Gilbert, Oxford University, 2014, the information attached is credible because it was researched by a renown historian, Professor Martin Gilbert. It is factual because he made his research and used appropriated sources, such as secondary sources to finish his work.