Does anyone knoww thiss??

A: To introduce the idea that McCandless's Father had complex reasons for leaving his family.

Explanation:

The paragraph directly states that "it didn't say why. I read it considerable in it bow and then. The statements was interesting but tough." That text supports in my answer on how.

from the word list given, the most suitable words that relate to the reason information were written would be:  

objectivity: lack of bias, judgment, or prejudice

accuracy: free of mistakes, to be correct

authority: the ability to tell people what to do or believe in

content: to be satisfied  

it can be said that the author made the article to present objectivity, to provide accurate information, to be the authority in the subject that he or she writes, and to be satisfied of the information quality given out.