Try using the elimination method 
Salt and sugar are soluble so we are left with being at and quartz. 
Vinegar is a liquid so I will assume it will dissolve. We are left with quartz
        
             
        
        
        
Is there a multiple choice or fill in the blank?
        
             
        
        
        
Answer:
The answer is D) It will allow scientists to make personalized medicine.
Explanation:
I used the context of the article where they stated "So for years, scientists have been trying to use cloning techniques to make embryonic stem cells that are essentially a genetic match for patients. The idea is that such a close match would prevent their bodies from rejecting the cells."
 
        
             
        
        
        
It is the comparison of the nucleotide sequences in DNA