Answer:
you didnt add the excerpt but the definition of idiom is
a group of words established by usage as having a meaning not deducible from those of the individual words
or
a characteristic mode of expression in music or art.
Explanation:
In the chapter “On The Rainy River” in the things we Cary how does Tim O’Brien use various settings to creat a complex meaning gfdgtrfgfgrefeg
A is the answer for this question
Hey there!
The answer to your question is: T<span>o explain something complicated with a simple statement.
Hope I helped!
(This is from </span>http://answers.wikia.com/wiki/How_is_generalization_used_in_a_literature)