The right answer is "A. The clergy "
You should be referring to the quote from "The Canterbury Tales" where the word gold is used to represent the clergy in all its purity that leaves it in such a high standard that nothing can reach it, just as gold can not be attained by rust.
 
        
                    
             
        
        
        
B. False
In order to determine the author's perspective, you need to figure out what opinion or attitude the author has about the subject and that alone can sometimes be tricky.
        
                    
             
        
        
        
Answer:
Definitely formal English as formal English is used in formal settings. Both the examples you gave are formal settings. 
 
        
                    
             
        
        
        
Answer:
Ooh this will be so much fun!!! What do you need help with?
Explanation:
 
        
             
        
        
        
Answer:
1, 2 & 4 are the right answer choices