This is very similar to how you may think someone is paying attention when really everything they are saying is going right through them.
        
             
        
        
        
Answer:
D is the answer. Ur welcome
 
        
                    
             
        
        
        
The appositive phrase is not Maya Lin, like the comment above me stated, but it is B) Chinese-American.
An appositive phrase is usually separated from the rest of the sentence by commas, and it describes the subject, which here is Maya Lin. 
        
                    
             
        
        
        
Answer:
all the settlers disappeared
Explanation:
I can't remember all of the exact details, but when someone returned to the colony, everyone was gone ans the only thing lest was the word "croatoan" carved into a tree.