The correct answer is option D, "concerns about the development of new weapons"
Reason - 
There is no link of genetic engineering with the creation of deadly weapons and those too physical weapons.
The common ethical concerns related to biotechnology experiments consists of the following –  
a)	Leaking of genetic information of an individual
b)	Creation of harmful species
c)	Development of harmful disease causing factors.  
d)	And a lot of morality issues such as harming the privacy of an individual etc.  
 Thus Option D is incorrect
 
        
                    
             
        
        
        
Rivers, because rivers have currents that streamlined bodies are built for
        
                    
             
        
        
        
Answer:Ridge push 
Explanation: hope this helps <3