Hello. You did not show the results of the study to which this question refers, which makes it impossible for it to be answered accurately. However, I will try to help you in the best possible way.
Antibiotics that were most effective in overcoming bacterial resistance and killing a large number of bacterial colonies, if not all, should be chosen. In that case, antibiotics are chosen where the bacteria are more susceptible and fragile. In relation to bacteria B. subtilis, the antibiotics clindamycin and vancomycin, tend to be more efficient.
 
        
             
        
        
        
D is the answer to your question
        
                    
             
        
        
        
A-affix 
1. A has the suffix ical
B tic
.c has ment
D does not have a suffix
E has ence.
 2. The answer is root because it is not affix, not suffix or prefix
 so it is root.
 3. A because the prefix auto
D - In
 4. it is again not suffix or prefix, or postscript so affix.
        
                    
             
        
        
        
Explanation:
उज्ज्ज्ज्ज्ज्ज्जिउउउय्त्फ्फ्ह,त्घ्हु