Answer:
correct option is B. Primer residue
Explanation:
correct answer is Primer residue because primer residue are form from the ignition of the chemicals in primer when the firearm is  discharge
and the result in formation of microscopic particle that is blown out of various  opening in weapon when this weapon is discharge
and this primer residue is deposit on hand as firing weapon and hand weapon 
but in the absence of primer residue on hand it is consistent with individual not have fire
so correct option is B. Primer residue
 
        
             
        
        
        
Answer:
Creating the Marshall Plan
Explanation:
The Marshall Plan, also known as the European Recovery Program, was a U.S. program providing aid to Western Europe following the devastation of World War II. It was enacted in 1948 and provided more than $15 billion to help finance rebuilding efforts on the continent.
 
        
                    
             
        
        
        
because he loved baboons more than anything even his family
 
        
             
        
        
        
Pump curves give the data about the ability of the pumps to produce the flow against a particular head.
<u>Explanation:</u>
Pump curves are basically information about a given siphon's capacity to deliver stream against certain head. At the point when you're perusing a bend, the siphon's stream rate will be on the top and base and its stature to push is on the sides.
In the system that the framework will have a filter which requires cleaning when the stream rate drops, the steep curve permits more weight drop at a given stream rate as we drop from the structure point.