Answer:
D. Fourier inspired Champollion to decipher the writings on the Rosetta Stone.
Explanation: Edge
 
        
                    
             
        
        
        
The correct use of comparative is found in the following sentence: 
<span>D. George has a bigger appetite than Harry.
</span>
Below, I will correct the other sentences:
A. This is the worst picture I've ever seen.
B. Alicia is a better swimmer than Marilynn.
<span>C. Of the three girls, Janet is the best speaker.</span>
        
             
        
        
        
Answer:
 C .He is angry with both families for fighting in the streets again.