Unclear question. However, I inferred the actual question to be;
What is the antecedent of the pronoun? <em>Mrs. Edwards always writes her comments at the end of the essays.</em>
Answer:
<u>Mrs. Edwards</u>
<u>Explanation:</u>
Yes, often in the English language the antecedent of a pronoun refers to a word that will be replaced by a pronoun. But remember a pronoun simply refers to a word used instead of a noun. 
From the sentence;
<em>"Mrs. Edwards"</em> = a noun  (the antecedent)
"her" = a pronoun.
 
        
             
        
        
        
Answer:
C. Laughter is the best medicine.
Explanation:
It sounds like a theme, the rest of the choices just sound like statements. You can wrap a story around the theme for C, but the other choices seem like pieces of a story.
Hope this helps, good luck! ;)
 
        
             
        
        
        
The answer is c that is sat
        
                    
             
        
        
        
To think hard and give good examples. In which you give good answers to things most of the time like you think good