Answer:
Someone who is from the West and whose parents are from the West.
Explanation:
In Gary Sato's <em>Like Mexicans</em>, he tells the story of how his parents and family want him to marry a girl from his own race and ethnicity. They seemed to emphasize the importance of marrying within the same 'race', which he also tries hard to obey as far as he can. 
In the given passage, Gary mentioned his best friend Scott as <em>"a second-generation okie"</em>. And like he mentioned in the beginning of the story, and according to his grandmother, <em>"everyone who wasn't Mexican, black or Asian were Okies"</em>. So, though Okie is a term generally used to refer to a resident of Oklahoma or a native of that place, Sato used this term as a generalized term for anyone from the West and whose parents are from the West.
 
        
             
        
        
        
I would use it that was me like 
     Dear,
 
        
                    
             
        
        
        
When you act or behave a certain way purposely it's because you are motivated to act out that specific behavior so you already know what the results will be for your actions. This can cause awareness, because when you know what the result will be, that shows that you understand and are very much aware of your surroundings, which causes you to act that way purposely. This leads to more understanding. I hope that was good and makes sense.