Which is a challenge of first-person narration?
a. the story must be told in chronological order.
b. the story cannot go into different characters' heads.
c. the story has to sound journalistic and unbiased.
d. the story needs to control several points of view.

B- The story cannot go into different charterers' heads

According to my researches, the statement   "the factual information allows you to judge how credible the analysis in the source is." is not true. a factual information does not judge any credible analysis because it shows facts that are generally known by everyone.