Both passages identify which one of the following as a requirement for historical research?

jing jing on September 26, 2020

could someone please explain this?

could someone please explain this? thanks

Replies

on September 29, 2020

I also need help with this one, thank you!

Kate on June 6, 2021

sos!

Nishant on September 16, 2021

I believe that the first paragraph of passage B highlights why C is the right answer.