To illustrate the author’s calm, contemplative mood
This is the best description for the excerpt. The author illustrates his mood with words that identify his mood at the moment when he wrote it. He has written about his thoughts as well and his view of nature. 
        
                    
             
        
        
        
Answer:
For me I will say "bias" is like being unfair to someone for a spefic reason, or favoring a specfic person, group. 
 
        
             
        
        
        
Did you try looking it up on the internet?
        
             
        
        
        
Foreshadowing is when an author uses symbolism, an event, a small detail, or even a part of dialogue to be a warning or indication of a future event. An author might use this because they want to give the reader knowledge about a future event or to tease them.